[PT Japfa feed nursury](https://www.japfacomfeed.co.id/operational-area?page=16)
[Cara Budidaya Kerapu](#kerapu)
[CV Cahaya Baru Aquamarine](https://share.google/m4zf7W2tRSxCqAx1t)
- the larger exporter coral and ornament marine fish
[sulmet](https://www.huvepharma.us/product/sulmet/)
[Ikan Tirusan](#ikan-tirusan-otolithoides-pama)
[Ikan Malong](#ikan-malong-muraenesox-cinereus)
[Ikan sidat](#eel-ikan-sidat)
[Image Maker](https://imageresizer.com/)
[pdfum binary](https://github.com/bblanchon/pdfium-binaries)
[Longline opencage](https://link.springer.com/chapter/10.1007/978-3-319-51159-7_3)
# [Fertelizer for Microalgae](https://annalsmicrobiology.biomedcentral.com/counter/pdf/10.1186/s13213-020-01618-0.pdf)
* Green phytoplanktons (**Nannochloropsis** oculata,Tetraselmis chui, Chlorella, Dunaliella tertiolecta)
* Golden phytoplanktons (Tisochrysis lutea, Pavlova, Isochrysis galbana, Thalassiosira weissfloggii)
* Red phytoplankton (Rhodomonas salina)
* Orange phytoplankton (Chaetocerors calcitrans)
* Brown phytoplanktons (Pheaodactylum tricornutum)
* Rotifer
* How to keep rotifers alive? You can store live rotifers for one week in the refrigerator. Just give them a little algae every other day.
Some people do indeed freeze rotifers and feed them out to their corals.
Just make sure they don't get freezer burn!
[Lugol preservation technique](https://www.jstage.jst.go.jp/article/pbr/17/4/17_P170407/_pdf/-char/en)
The life span of rotifers has been estimated to be between 3.4 to 4.4 days at 25°C.
Generally, the larvae become adult after 0.5 to 1.5 days and females thereafter start to lay eggs approximately every four hours.
It is believed that females can produce ten generations of offspring before they eventually die.
Facing starvation, some rotifers could even extend their life span; young Brachionus plicatilis suppressed reproduction
and about half of them survived for more than 16 days without any food, while the fed controls reproduced normally and
lived about 12 days (Yoshinaga, Hagiwara & Tsukamoto 2003a).
Can rotifers become dormant?
Like tardigrades, bdelloid rotifers have the ability to enter a dormant state called cryptobiosis,
or more specifically, anhydrobiosis. In this state, they can survive desiccation,
meaning the complete loss of water from their body, for long periods of time.
[Collecting rotifers](https://evidentscientific.com/en/insights/rotifers-an-introduction-to-the-microscopic-world-of-wheel-animals#:~:text=Like%20tardigrades%2C%20bdelloid%20rotifers%20have,for%20long%20periods%20of%20time.)
Kedalaman Air: Kedalaman perairan ideal untuk teripang bervariasi antara 1 hingga 3 meter, tergantung pada spesies yang dibudidayakan.
Teripang pasir biasanya lebih cocok pada kedalaman 2 meter, sementara teripang gamat dapat hidup di perairan yang sedikit lebih dangkal.
Mysis Shrimp are nutritionally whole or balanced and provide your fish with plenty of protein, a little fat, and some vitamins and minerals.
Brine Shrimp, on the other hand, is like a bag of chips or a handful of french fries. They taste great but really don't provide all that much nutrition by themselve
## Microalgae Fertelzer Chaetoceros upscaling formulation (modified from Agudo 2006)
This is crucial information for anyone culturing diatoms for a sandfish hatchery.
Your provided dosages are a clear and effective recipe for promoting diatom growth. Let's break down what these numbers mean and how to use them correctly.
Interpretation of Your Dosages:
Your recipe uses two key components:
1. Sodium Metasilicate (Na₂SiO₃): 0.375 g per 10 L (or 7.5 g per 200 L)
· Purpose: This is the most important nutrient for diatoms. Silicate (SiO₃) is the building block they use to construct their glass-like cell walls (called frustules). Without ample silicate, diatom growth will be poor, and other, less desirable algae may take over.
· Calculation: This dosage equals a concentration of 37.5 mg per liter (ppm). This is a standard and effective concentration for benthic diatom culture.
2. Fertilizer (Manusol 30:10:10): 0.25 g per 10 L (or 5 g per 200 L)
· Purpose: This provides the essential macronutrients:
· Nitrogen (N): 30% - For protein and chlorophyll synthesis.
· Phosphorus (P): 10% - For energy transfer (ATP) and nucleic acids.
· Potassium (K): 10% - For enzyme activation and osmotic regulation.
· Calculation: This dosage equals a concentration of 25 mg per liter (ppm). This is a good, balanced level to support growth without risking a harmful algal bloom of unwanted species.
---
# general techniques and methods in hatchery
All metals are suspect and should be avoided if possible. Titanium and stainless steel 316 may be
used in small amounts if absolutely necessary. If metal pump parts cannot be avoided, use stainless steel 316 or cast iron.
Metal should be coated with a tested epoxy paint wherever possible.
Step-by-Step Guide: How to Use This Recipe
This process assumes you are conditioning water that will be used to grow biofilm on PVC sheets or other substrates in a separate nursery tank.
Phase A: Preparing the Enriched Seawater
For a 200-L culture tank (a common size for conditioning):
1. Fill the tank with 200 liters of filtered (1-micron) and UV-sterilized seawater.
2. Add Silicate First: Weigh 7.5 grams of sodium metasilinate. Dissolve it completely in a small cup of fresh water from the tank. Once fully dissolved, pour this solution evenly throughout the tank.
3. Add Fertilizer Next: Weigh 5.0 grams of Manusol (30:10:10). Dissolve it completely in a separate small cup of tank water. Pour this solution evenly throughout the tank.
4. Aerate and Mix: Turn on the air stones to vigorously mix the nutrients into the water for at least 30 minutes.
5. Inoculate with Diatoms: Add your live, healthy diatom inoculum (Navicula, Amphora, etc.) to the tank. The water may slightly change color.
6. Condition: Let the tank run with aeration and light for 24-48 hours before using this water. This allows the diatoms to multiply and the chemistry to stabilize.
Phase B: Applying to the Nursery Tank with PVC Sheets
You have two main methods:
Method 1: Direct Application (Most Common)
1. Place your clean PVC sheets into the empty nursery tank that will hold the juvenile sandfish.
2. Fill the nursery tank directly with the pre-conditioned, nutrient-rich water from your 200-L culture tank.
3. The diatoms in the water will immediately begin to colonize the PVC sheets.
4. Provide light and gentle water flow. A golden-brown biofilm should be visible on the sheets within 3-5 days.
Method 2: Water Exchange Method
1. Fill your nursery tank (with PVC sheets already inside) with plain, filtered seawater.
2. Inoculate it with your diatom culture.
3. Add the nutrients directly to the nursery tank using the same per-liter ratio:
· For every 10 liters of water in the nursery tank, add:
· 0.375 g Sodium Metasilicate
· 0.25 g Manusol (30:10:10)
4. This method is simpler but can be less consistent than pre-conditioning the water.
---
Critical Considerations and Best Practices
· Bio-Security: Always use sterilized water and clean equipment. The goal is to grow diatoms, not parasites or harmful bacteria.
· Light: Diatoms need light for photosynthesis. Provide 12-16 hours of light per day using full-spectrum or cool-white fluorescent/LED lights. Avoid direct sunlight, which can overheat the culture.
· Aeration: Gentle but constant aeration is needed to keep nutrients suspended and provide gas exchange, but it should not be so strong that it shears the delicate biofilm off the PVC sheets.
· Re-dosing: As the juveniles graze and the diatoms consume nutrients, you will need to replenish. After the initial setup, perform a 20% water change every few days and add 20% of the original nutrient dose (e.g., for a 200L tank, add 1.5g silicate and 1.0g fertilizer after the water change) to sustain growth.
· Observation: A healthy, diatom-dominated biofilm will be a smooth, golden-brown to dark brown color. If you see green, hair-like algae, it often means the silicate ratio is too low, or your initial inoculum was not strong enough in diatoms.
Comparison to Standard F/2 Medium
For reference, your recipe is similar to the classic F/2 algal medium used in aquaculture, but simplified. F/2 typically includes trace metals and vitamins. Your Manusol fertilizer provides the N-P-K, and the sodium metasilicate provides the Si. This simplification is perfectly adequate for many hatchery operations.
Conclusion: Your provided dosages are correct and represent a standard, effective recipe for cultivating the diatom biofilm essential for raising healthy sandfish juveniles. The key is consistent application and good husbandry practices.
## [Hatchery Feed](https://www.epicorebionetworks.com/wp-content/uploads/2021/12/epifeed-lhf3.pdf)
# [Microalgae fertelizer](https://www.epicorebionetworks.com/wp-content/uploads/2021/12/epizym-agpc.pdf)
- [Make F/2 fertelizer](https://wordpress.clarku.edu/debrobertson/laboratory-protocols/f2-culture-media/)
- [another F/2 version](https://www.uni-due.de/imperia/md/content/biology/ccac/f_2.pdf)
- [another techniue](https://zoo.unibas.ch/people/dita/lab/methods_pdfs/f2_adjusted.pdf)
### Requirements to Set Up a *Vannamei* Shrimp Hatchery
To establish a successful Pacific White Shrimp (*Litopenaeus vannamei*) hatchery, you need the following key components:
---
|Table 1. Comparison between Brachionus species and Colurella adriatica in terms of size|
|----------------------------------------------------------------------------------------|
|Rotifer species |Lorica length (µm)| Lorica width (µm)|
|----------------|------------------|--------------------|
|C. adriatica | 47.530- 98.868| 34.308–56.277|
|B. plicatilis (L type) |130- 340| 116–146|
|B. rotundiformis (S type) |100- 210| 98–121|
|B. rotundiformis (SS type)| 58-120| 58 -100|
[Food web](https://www.intechopen.com/chapters/1208972)
[Hatchery](https://youtu.be/nC8ODLchAfI?si=oFTaONLuwqmxWe2v)
[refenence](https://www.salemmicrobes.com/blog-view.php?id=18)
[reference 2](https://ecowateraqua.com/info-detail/unveiling-the-eastern-pacifics-white-gem)
[certificate of anti-biotic free aquaculture inputs](https://www.salemmicrobes.com/upload/pdf/product/1705582563307.pdf)
- [**female** or male L Vannamei at first legs and hole](https://www.youtube.com/watch?v=MLxpxANqxOo)
-Female grows faster than male vannamei at the same age](https://www.entomoljournal.com/archives/2019/vol7issue5/PartN/7-4-307-805.pdf
)
## 1. Hatchery Design & Infrastructure
### 📍 Location
- Proximity to clean seawater (salinity **25–35 ppt**).
- Minimizing the distance for seawater intake reduces pumping costs and potential issues with long pipe runs.
- The seawater intake should be from depth seawater instead of shallow seawater (temperature, salinity, turbidity variation greatly day and night or daily)
- Locating the hatchery close to sea level avoids the need for powerful pumps to lift water, reducing operational costs.
- The hatchery operations are expected to run year-round. However, there may be seasons when the seawater source may become turbid, caused by intense rainfall
or storms. The sand-filter system described in earlier sections (Section 2.2.2.) can help reduce this turbidity. Additionally, water stored in the reservoir can be held longer (1–2 days)
to allow the remaining silt to settle, before the water is used in the tanks. Water exchange in broodstock tanks can also be delayed until the water source is clear of silt.
- Raw seawater needs to be filtered to remove debris and potentially sterilized to eliminate harmful bacteria and pathogen
- Avoid polluted areas (industrial/agricultural runoff).
- Reliable electricity (backup generator required).
- Algal Culture:
- Independent algal culture system: A dedicated space for producing phytoplankton (algae) is essential for feeding larvae and juveniles.
- Air supply and water treatment: Consider the air supply and water treatment needs for the algal cultures.
- Distribution of algae: Efficient methods for delivering algae to larval and juvenile tanks are necessary
- Biosecurity:
- Segregation of different life stages:
- Separate areas for broodstock, larvae, and juveniles minimize the risk of disease transmission.
- Controlled access:
- Limiting access to the hatchery and implementing strict hygiene protocols are essential.
- [New Arrival Acclimation Guide](https://www.liveaquaria.com/article/157/?aid=157)
- [Biota's acclimation guide for all fish, corals, clams, and inverts ](https://shop.thebiotagroup.com/pages/acclimation-guide)
### 🏗 Facility Layout
| Section | Purpose |
|---------|---------|
| Broodstock Tanks | Holding & conditioning mature shrimp |
| Spawning Tanks | Egg hatching & nauplii collection |
| Larval Rearing Tanks | PL1–PL5 rearing (greenwater/biofloc) |
| Algal Culture Unit | Produce live feed (e.g., *Chaetoceros*, *Tetraselmis*) |
| Artemia Hatching Room | Decapsulated cysts for larval feed |
| Post-Larval (PL) Nursery | Grow PL10–PL15 before sale |
| Lab & Water Treatment | Water testing, disinfection (UV/chlorine) |
Tank Specifications:
- FRP/Concrete tanks (smooth, non-toxic).
- Round/oval shape (better water circulation).
- Capacity:
- Broodstock: 5–10 tons (1–2 shrimp/m²).
- Larval rearing: 2–5 tons.
---
## 2. Water Supply & Treatment
### 🌊 Water Source
- Seawater intake (sand filter + sedimentation tank).
- Brackish water (if inland, use artificial sea salt).
### 💧 Water Treatment System
- Mechanical filtration (sand filter, drum filter).
- Biological filtration (bio-balls, bio-media).[Microalgae and ditoms?](https://pmc.ncbi.nlm.nih.gov/articles/PMC8810035/table/t0001/)
- [Disinfection (UV sterilizer, chlorine removal)](https://www.globalseafood.org/advocate/oxidants-enhance-water-quality/).
- Aeration (air blowers, diffusers).
#### [How Potassium Permanganate Works in Water Treatment](https://www.getwsu.com/potassium-permanganate/)
In water treatment applications, potassium permanganate acts as an oxidizer that reacts with:
Iron and manganese – oxidizes soluble iron (Fe2+) and manganese (Mn2+) into solid particles that can be filtered out
Hydrogen sulfide (H2S) – removes unpleasant sulfur odors
Organic matter and algae – helps reduce biological growth and improve clarity
Taste and odor compounds – neutralizes earthy or musty smells often caused by decaying organic material
KMnO4 can reduce dissolved oxygen levels.
Water Sterilization
---
Water sterilization requires two steps: prefiltration and disinfection. For prefiltration,
use filters with a mesh of less than 200-300 microns at the water inlet to prevent entry of pathogens, predators and undesirable settleable solids.
The filters should be maintained regularly by rinsing them with clean water and removing any deposits.
When it comes to water disinfection, chemical disinfectants should be used to eliminate all germs. For 24 hours,
add 20–30 ppm sodium hypochlorite 60 percent, 0.5–2.5 ppm KMnO4, and 10 ppm TCCA to the filtered water. During chemical disinfection,
maintain maximum aeration. To get rid of the leftover chlorine, multiply the remaining chlorine concentration by three to get the right amount of sodium thiosulphate. Finally, repeat the process two to seven times throughout the course of 24 hours.
Critical Parameters:
| Parameter | Optimal Range |
|-----------|--------------|
| Temperature | 28–30°C |
| Salinity | 25–35 ppt |
| pH | 7.8–8.2 |
| DO (Dissolved Oxygen) | >5 ppm |
| Ammonia NH4+| <0.1 ppm |
| Nitrite NO3- | <0.05 ppm |
---
## 3. Broodstock Management
### 🦐 Source of Broodstock
- SPF (Specific Pathogen-Free) from certified suppliers.
- Wild-caught (if SPF unavailable, quarantine first {vannamei 10 days}).
### 🔬 Conditioning & Ablation
- Unilateral eyestalk ablation (for induced spawning).
- High-protein diet (squid, mussels, polychaetes).
- Hormonal supplements (e.g., serotonin for maturation).
---
## 4. Larval Rearing & Feeding
### 🥗 Live Feed Production
| Stage | Feed Type |
|-------|----------|
| Nauplii (N1–N3) | No feeding (yolk sac) |
| Zoea (Z1–Z3) | Microalgae (*Chaetoceros*, *Tetraselmis*) |
| Mysis (M1–M3) | Artemia nauplii + algae |
| Post-Larvae (PL1–PL15) | Formulated feed + Artemia |
---
| stage | action protocol-O2tree|
|-------|----------------|
|PL? | eliminate PL slow molting,etc|
---
Algal Culture Setup:
- Photobioreactors or plastic bags.
- Lighting: 24-hour LED (5000–10,000 lux).
---
Microalgae types:
- Nannochloropsis sp (freshwater media or/and seawater)
- The Nannochloropsis genus includes several species, such as:
- Nannochloropsis gaditana, Nannochloropsis granulata, Nannochloropsis oceanica, Nannochloropsis limnetica, Nannochloropsis salina, and Nannochloropsis oculata.
- Chollera volgaris sp ( freshwater with seawater tolerance)
- Tetraselmis is a green algal genus within the order Chlorodendrales (freshwater and seawater)
- Isochrysis is a flagellated marine algae genus good for bivalve larvae
- Pavlova sp. and Chaetoceros sp. are marine algae genus for abalone larvae
- Thalassiosira weissflogii
- Synechococus is marine microalgae
Artemia Decapsulation:
- Hatching rate: >90% (use premium cysts).
- Enrichment (HUFA, vitamins) before feeding.
---
## 5. Hatchery Equipment Checklist
| Equipment | Purpose |
|-----------|---------|
| Air blowers & diffusers | Aeration |
| Water pumps | Circulation |
| Heaters/chillers | Temp control |
| UV sterilizer | Disinfection |
| Microscope:Olympus CH2 | Larval monitoring |
| DO/pH meters | Water testing |
| Incubators | Artemia hatching |
| Regrifrator | store phytoplanton and rotifer|
| dark and lighting for broodstock emulate summer| 14 hour light, 10 hour dark|
| [Big aqua botle 25 l? or
plastic bag] with wiremesh outside()| Microalgae culture|
| Weight mechine 0.01 g and 0.1 gr and 1gr resolution| buy aliexpress|
| 4000W model RRH-2000A seaweed / sargassum blender to 300-400um RRi hong ltd| 2000g Commercial Spice Grinder Electric Grain Mill Grinder High Speed|
|
|
---
## 6. Biosecurity & Disease Control
- Quarantine new broodstock (7–10 days).
- Disinfect tanks (iodine, chlorine between batches).
- PCR testing (for WSSV, IHHNV, EHP).
- Probiotics (*Bacillus* spp.) to prevent vibriosis.
---
## 7. Hatchery Economics
| Cost Factor | Estimated Budget (USD) |
|------------|----------------------|
| Land & Construction | $50,000–$200,000 |
| Broodstock (100 females) | $5,000–$10,000 |
| Equipment | $20,000–$50,000 |
| Operational (monthly) | $5,000–$15,000 |
Revenue Potential:
- Post-larvae (PL12) price: $1–$3 per 1,000 PLs.
- Production capacity: 10–50 million PLs/month.
---
## ✅ Key Success Factors
✔ Strict water quality control
✔ High-quality broodstock (SPF)
✔ Efficient live feed production
✔ Disease prevention (biosecurity)
Need a detailed business plan or SOPs? Let me know! 🚀
### Sea Cucumber Hatchery Setup & Production Guide
*(For Sandfish [*Holothuria scabra*], Tiger Tail [*Holothuria atra*], and other commercial species)*
---
## 1. Hatchery Design & Infrastructure
### 📍 Location Requirements
- Clean seawater (salinity 30–35 ppt, temperature **26–30°C**).
- Protected from storms & pollution (avoid industrial/urban areas).
- Access to electricity & freshwater (for larval rearing).
### 🏗 Facility Layout
| Section | Purpose |
|---------|---------|
| Broodstock Tanks | Mature adult conditioning & spawning |
| Spawning Tanks | Induced spawning & fertilization |
| Larval Rearing Tanks | Auricularia → Doliolaria → Pentactula stages |
| Settlement Tanks | Juvenile settlement on substrates |
| Nursery Tanks | Grow-out to 1–5 cm juveniles |
| Algal Culture Unit | Live feed (diatoms, *Chaetoceros*) |
| Water Treatment | Filtration, UV sterilization |
[fish meal price](https://www.datawrapper.de/_/TjwV6/)
Tank Specifications:
- Round/oval FRP/fiberglass tanks (2–10 tons capacity).
- Shallow tanks (0.5–1 m depth) for larval rearing.
- Dark-colored tanks (reduces stress in larvae).
---
## 2. Broodstock Collection & Conditioning
### 🔍 Selection Criteria
- Healthy, disease-free adults (no lesions, active movement).
- Mature size:
- *Holothuria scabra*: ≥20 cm, 300–500 g.
- *Holothuria atra*: ≥25 cm, 400–600 g.
### 🌡 Conditioning Process
- Acclimatize in tanks (salinity/temperature matching wild habitat).
- Feed natural diet:
- Seaweed powder (30% protein).
- Microalgae (*Navicula*, *Chaetoceros*).
- Thermal shock method for spawning induction:
- Raise temp to 32°C for 1 hr, then return to 28°C.
---
## 3. Spawning & Fertilization
### ⚡ Induced Spawning Techniques
1. Temperature Shock (Most common)
- Expose to 5°C above ambient for 30–60 mins.
2. Drying + Sunlight Exposure
- Keep broodstock dry for 30 mins, then return to water.
3. Gonad Stimulation (Experimental)
- Serotonin injection (1–2 µg/g body weight).
### 🥚 Egg Collection & Fertilization
- Eggs: 100,000–500,000 per female.
- Sperm: Dilute in seawater before mixing with eggs.
- Fertilization rate: 70–90% under optimal conditions.
---
## 4. Larval Rearing (Auricularia → Pentactula)
| Stage | Duration | Feed | Key Requirements |
|-------|---------|------|-----------------|
| Auricularia | 8–12 days | Microalgae (*Chaetoceros*, *Isochrysis*) | Gentle aeration, 28°C |
| Doliolaria | 3–5 days | Mixed algae + yeast | Reduced light |
| Pentactula | 5–7 days | Benthic diatoms (*Navicula*) | Settlement substrates |
Water Quality:
- pH: 7.8–8.3
- Ammonia: <0.1 ppm
- DO: >5 mg/L
---
## 5. Juvenile Settlement & Nursery
### 🪨 Settlement Substrates
- PVC plates (coated with biofilm).
- Coral rubble/seaweed mats (natural texture).
### 📈 Nursery Grow-Out
- Tank size: 2–5 tons (stocking density: **1,000–2,000 juveniles/m²**).
- Feed:
- Diatom paste (daily).
- Seaweed powder (30% protein).
- Survival rate: 30–60% (if managed well).
---
## 6. Key Equipment Checklist
| Equipment | Purpose |
|-----------|---------|
| Air blowers & diffusers | Aeration for larvae |
| Water heaters/chillers | Temp control |
| UV sterilizer | Pathogen control |
| Microscopes (40–100x) | Larval monitoring |
| Algal photobioreactors | Live feed production |
| Settlement plates | Juvenile attachment |
---
## 7. Disease & Biosecurity Management
### 🦠 Common Diseases
- Skin ulceration (bacterial *Vibrio* spp.) → Treat with oxytetracycline baths.
- Parasitic protozoa → Formalin dips (50 ppm for 30 mins).
### 🔒 Biosecurity Measures
- Quarantine new broodstock (7–10 days).
- Disinfect tanks (iodine, hydrogen peroxide).
- PCR testing for pathogens.
---
## 8. Economics & Production Timeline
| Phase | Duration | Cost (USD) |
|-------|---------|-----------|
| Broodstock conditioning | 1–2 months | $2,000–$5,000 |
| Larval rearing | 20–30 days | $3,000–$8,000 |
| Nursery (to 1–2 cm) | 2–3 months | $5,000–$10,000 |
When transporting *Penaeus vannamei* (Pacific white shrimp),
the requirements for Post Larva 15 (PL15) and Post Larva 10 (PL10) differ mainly in terms of density, water quality, oxygen demand, and stress sensitivity due to their developmental stages.
Below is a comparison:
### 1. Size & Development Stage
- PL10: Younger, smaller (≈ 10 days post-metamorphosis), more delicate, higher mortality risk.
- PL15: Older, larger (≈ 15 days post-metamorphosis), more robust, better stress tolerance.
### 2. Transport Density (Per Bag/Liter)
- PL10: Higher density possible (e.g., **5,000–10,000 PL10/L**) due to smaller size.
- PL15: Lower density (e.g., **3,000–5,000 PL15/L**) due to larger size & higher oxygen demand.
### 3. Oxygen Requirements
- PL10: Lower absolute oxygen demand but more sensitive to hypoxia.
- PL15: Higher oxygen consumption per individual but more resilient to fluctuations.
### 4. Water Quality Sensitivity
- PL10: More sensitive to ammonia, temperature swings, and salinity changes.
- PL15: Hardier, tolerates slight variations better.
### 5. Temperature & Salinity
- Both require 26–30°C and salinity 25–35 ppt, but:
- PL10: Needs stricter stability.
- PL15: Can handle minor deviations.
### 6. Stress Management
- PL10: More prone to stress; may need additives (e.g., **buffers, probiotics**).
- PL15: Handles transport stress better; fewer additives needed.
### 7. Transport Duration
- PL10: Best for shorter hauls (<6–8 hrs).
- PL15: Can endure longer transport (up to 12–24 hrs) with proper aeration.
### Key Takeaways
- PL10: Higher density possible but needs more careful monitoring of water quality.
- PL15: Lower density but hardier for long-distance transport.
- For both: Use oxygen-filled bags, temperature control, and minimal stress handling.
Would you like specific protocols for packing or acclimation?
Here’s a step-by-step protocol for packing and transporting PL10 vs. PL15 *Litopenaeus vannamei*, including acclimation procedures to ensure high survival rates.
---
### 1. Pre-Transport Preparation
#### A. Water Quality Adjustment
- Salinity: Match transport water to the source farm’s salinity (± 2 ppt).
- Temperature: Gradually adjust to 26–28°C (avoid sudden changes).
- pH: Maintain 7.8–8.2 (use buffering agents if needed).
- Ammonia/Nitrite: Must be <0.1 ppm (use zeolite or probiotics if high).
#### B. Starvation
- PL10: Stop feeding 6–8 hrs before packing (gut clearance).
- PL15: Stop feeding 8–12 hrs before packing (larger body size = longer clearance time).
---
### 2. Packing Protocol
#### A. Bag Specifications
- Use oxygen-filled polyethylene bags (thickness ≥ 0.8 mm).
- Fill 1/3 with water, 2/3 pure oxygen (O₂).
- Add 2–5 g/L of activated charcoal (for ammonia control).
#### B. Stocking Density
| Stage | Bag Size (L) | Density (PL/L) | Max Transport Time |
|--------|------------|---------------|-------------------|
| PL10 | 10–15 | 5,000–10,000 | 6–8 hrs |
| PL15 | 10–15 | 3,000–5,000 | 12–24 hrs |
Note:
- Reduce density by 20–30% if transport exceeds 12 hrs.
- For air transport, decrease density further (PL10: 4,000–6,000/L, PL15: **2,000–3,000/L**).
#### C. Additives (Optional but Recommended)
- Stress Coat: 1–2 ppm (e.g., **aloe vera extract**).
- Probiotics: *Bacillus spp.* (1–2 ppm) to reduce ammonia.
- Antifungal/Mild Sedative: For long hauls (e.g., 2–5 ppm clove oil for PL15 only).
---
### 3. Transport Conditions
- Temperature: Maintain 26–28°C (use cooling boxes or **insulated containers**).
- Oxygen Monitoring: Ensure O₂ > 5 ppm (use oxygen tablets if needed).
- Avoid Light & Vibration: Keep bags in dark, stable conditions.
---
### 4. Post-Transport Acclimation
#### A. Floating for Temperature Adjustment
- Float unopened bags in destination pond for 15–30 mins to equalize temperature.
#### B. Gradual Salinity Mixing (If Needed)
- Step 1: Open bag, add small amounts of pond water every 5 mins for 30–45 mins.
- Step 2: Release PLs gently near aerated areas.
#### C. Post-Release Care
- PL10: Feed immediately with high-protein diet (e.g., *Artemia*).
- PL15: Can wait 2–3 hrs before feeding (more resilient).
---
### 5. Survival Rate Expectations
| Condition | PL10 Survival (%) | PL15 Survival (%) |
|----------------------|------------------|------------------|
| Ideal Transport | 85–90% | 90–95% |
| Long Haul (>12h) | 70–80% | 85–90% |
---
### Key Differences Summary
| Factor | PL10 Requirements | PL15 Requirements |
|----------------|------------------|------------------|
| Density | Higher (5–10k/L) | Lower (3–5k/L) |
| O₂ Demand | Moderate | Higher |
| Stress | More sensitive | More tolerant |
| Max Time | 6–8 hrs | 12–24 hrs |
Would you like modifications for specific conditions (e.g., air freight, road transport in hot climates)?
LiveSeafood, [6/27/25 10:50 PM]
Here’s a modified transport protocol for specific conditions, including air freight, hot climates, and long-distance road transport, with adjustments for PL10 vs. PL15 *Vannamei* shrimp:
---
### 1. Air Freight Protocol (PL10 & PL15)
#### Key Challenges:
- Pressure changes → Risk of bag rupture.
- Strict airline regulations → Limited oxygen volume.
- No access to temperature control in cargo hold.
#### Adjustments:
| Factor | PL10 | PL15 |
|--------|------|------|
| Bag Thickness | 0.1–0.15 mm double-layered | 0.15–0.2 mm double-layered |
| Oxygen Ratio | 50% water, 50% O₂ (to prevent bursting) | 40% water, 60% O₂ (more resilient) |
| Density | 3,000–4,000/L (reduce by 30%) | 1,500–2,500/L (reduce by 40%) |
| Additives | 5 ppm EDTA (anti-stress) + 2 ppm probiotics | 3 ppm vitamin C (immune boost) |
| Packaging | Styrofoam box + coolant gel packs (if >6 hrs) | Insulated box + thermal lining |
Note:
- Use oxygen-absorbing pads (for airline safety compliance).
- Avoid ice (risk of cold shock; use chilled gel packs instead).
---
### 2. Hot Climate Transport (Road, >30°C Ambient)
#### Key Challenges:
- Heat stress → Increased metabolism → Oxygen depletion.
- Ammonia spikes due to higher metabolic waste.
#### Adjustments:
| Factor | PL10 | PL15 |
|--------|------|------|
| Cooling Method | Frozen water bottles (wrapped in cloth) | Phase-change cooling packs |
| Density | Reduce by 40% (e.g., 3,000–4,000/L → 1,800–2,400/L**) | **Reduce by 30% (e.g., **2,000–3,000/L → 1,400–2,100/L**) |
| Oxygen | Pure O₂ + oxygen tablets (as backup) | O₂ with slow-release tablets |
| Additives | 5 ppm sodium bicarbonate (pH buffer) | 2 ppm potassium chloride (ion regulator) |
| Travel Time | Only during cooler hours (night/early morning) | Max 8 hrs (daytime) |
Emergency Measures:
- If bags overheat, gradually lower temperature (avoid sudden cooling).
- Ammonia detox: Add zeolite chips (1–2 g/L) in extreme cases.
---
### 3. Long-Distance Road Transport (>24 Hours)
#### Key Challenges:
- Oxygen depletion → Risk of mass mortality.
- Accumulated waste → Ammonia toxicity.
#### Adjustments:
| Factor | PL10 | PL15 |
|--------|------|------|
| Density | Max 1,500/L | Max 1,000/L |
| Water Exchange | Not recommended (too stressful) | Partial exchange (10%) after 12 hrs if necessary |
| O₂ Supply | Oxygen generator or cylinder with regulator | O₂ cylinders + diffuser stones |
| Sedation | Avoid (too sensitive) | 1–2 ppm clove oil (if >24 hrs) |
| Monitoring | Check O₂/ammonia every 4 hrs | Check every 6 hrs |
Survival Tips:
- Use battery-powered air pumps for backup aeration.
- Darken transport containers to reduce stress.
---
### 4. Emergency Recovery Protocol
If PLs arrive weak or stressed:
1. Gradual Acclimation:
- Float bags for 45–60 mins (not 30 mins).
- Drip-acclimate with pond water over 1–2 hrs.
2. Revival Additives:
- PL10: 5 ppm glucose + 1 ppm vitamin B12.
- PL15: 3 ppm calcium magnesium + probiotics.
3. Post-Release Care:
- PL10: Hold in nursery tanks (1–2 days) before pond release.
- PL15: Can be released directly but avoid feeding for 4–6 hrs.
---
### Final Recommendations by Condition
| Transport Type | Best for PL10? | Best for PL15? |
|---------------|---------------|---------------|
| Air Freight | Only if <6 hrs | Preferred (more resilient) |
| Hot Climate | Avoid if possible | Use with cooling packs |
| Long Road Haul | Not recommended | Yes (with O₂ support) |
For highest survival:
- PL10: Keep transport <8 hrs, avoid extreme temps.
- PL15: More flexible but monitor O₂ closely.
Would you like a checklist for pre-transport inspection?
Here’s a detailed pre-transport inspection checklist to ensure optimal survival rates for PL10 and PL15 *Vannamei* shrimp during packing and transit:
---
### 🛠 Pre-Transport Inspection Checklist
*(For PL10 & PL15 – Adjust as Needed)*
#### ✅ 1. Shrimp Health Assessment
- PL10:
- ✔️ No visible deformities (e.g., bent rostrum, uneven tails).
- ✔️ Active swimming (≥90% of PLs responsive to light/movement).
- PL15:
✔️ Gills should be clean (no black spots/fouling).
✔️ Full gut line (no empty intestines due to starvation).
#### ✅ 2. Water Quality Verification
- Both PL10 & PL15:
- ✔️ Salinity: Matches source farm (±2 ppt).
- ✔️ Temperature: 26–28°C (no sudden fluctuations).
- ✔️ pH: 7.8–8.2 (use buffering if unstable).
- ✔️ Ammonia/Nitrite: <0.1 ppm (zeolite on standby).
- ✔️ Dissolved O₂: >5 ppm (calibrate meter before packing).
#### ✅ 3. Packing Materials Check
- Bags:
- ✔️ Double-layered polyethylene (≥0.8 mm thickness for road; **1.0 mm for air**).
- ✔️ No leaks (pressure-test with air before filling).
- Oxygen Supply:
- ✔️ Pure O₂ (≥99% purity) + backup oxygen tablets.
- ✔️ Sealing clips/ties (test strength).
- Additives:
- ✔️ Activated charcoal (2–5 g/L) packed separately.
- ✔️ Stress coat (e.g., aloe vera) for PL10.
#### ✅ 4. Environmental Controls
- For Hot Climates:
- ✔️ Frozen gel packs (not ice) wrapped in cloth.
- ✔️ Insulated box with reflector lining (if daytime transport).
- For Air Freight:
- ✔️ Airline-compliant O₂ levels (check IATA regulations).
- ✔️ Pressure-release valve (if high-altitude flight).
- For Long Hauls (>12 hrs):
- ✔️ Battery-powered aerator (fully charged).
- ✔️ Spare O₂ cylinder with regulator.
#### ✅ 5. Logistics & Documentation
- ✔️ Transport permits (if crossing borders).
- ✔️ Emergency contacts (driver/farm/consignee).
- ✔️ Route planned (avoid delays; no direct sunlight exposure).
---
### ⚠️ Red Flags to Cancel Transport
| Issue | PL10 Risk | PL15 Risk |
|-------|----------|----------|
| Ammonia >0.2 ppm | HIGH (mortality ≥50%) | Moderate (mortality 20–30%) |
| Temp >30°C | Extreme stress | Tolerable (if cooled) |
| >10% weak/dead PLs | Do NOT pack | Assess cause first |
---
### 📌 Post-Checklist Actions
1. PL10-Specific:
- Conduct 1-hour test pack with 1 bag (monitor O₂ drop rate).
- Feed high-protein diet 12 hrs pre-transport (then starve).
2. PL15-Specific:
- Check for exuviae (molts) in holding tank (indicates health).
- Sedate only if transport >24 hrs (**1 ppm clove oil**).
---
### 🔧 Emergency Kit for Transport Team
- For PL10:
- Portable O₂ meter + ammonia test strips.
- Glucose solution (for revival).
- For PL15:
- Spare battery-powered air pump.
- Calcium magnesium (for osmotic balance).
---
Final Tip: For PL10, prioritize shorter, cooler, and stable transports. PL15 can handle tougher conditions but still require monitoring.
Would you like a printable PDF version of this checklist?
LiveSeafood, [6/27/25 10:53 PM]
Here’s a printable PDF-friendly version of the checklist. You can copy this into a document, adjust formatting, and save as a PDF:
---
# 🦐 Pre-Transport Checklist for Vannamei PL10 & PL15
*(Print Before Each Shipment)*
### 📅 Date: _____
### 🔢 Batch No.: _____
### 🛣 Transport Type: ☐ Air ☐ Road ☐ Hot Climate ☐ Long Haul (>12h)
---
## 1. SHRIMP HEALTH INSPECTION
| Checkpoint | PL10 | PL15 | Done (✓) |
|------------|------|------|---------|
| Active swimming (≥90%) | ☐ | ☐ | ☐ |
| No deformities (bent rostrum/tail) | ☐ | ☐ | ☐ |
| Gills clean (no black spots) | ☐ | ☐ | ☐ |
| Gut line visible (no starvation) | ☐ | ☐ | ☐ |
⚠️ If >10% weak/dead, DO NOT PACK.
---
## 2. WATER QUALITY
| Parameter | Target | Measured | Acceptable? (✓/✗) |
|-----------|--------|----------|------------------|
| Temperature | 26–28°C | _____°C | ☐ |
| Salinity | Match farm (±2 ppt) | _____ppt | ☐ |
| pH | 7.8–8.2 | _ | ☐ |
| Ammonia | <0.1 ppm | _____ppm | ☐ |
| Dissolved O₂ | >5 ppm | _____ppm | ☐ |
---
## 3. PACKING MATERIALS
| Item | PL10 | PL15 | Status (✓/✗) |
|------|------|------|--------------|
| Double-layer bags (≥0.8mm) | ☐ | ☐ | ☐ |
| Pure O₂ (99%) + backup tablets | ☐ | ☐ | ☐ |
| Activated charcoal (2–5g/L) | ☐ | ☐ | ☐ |
| Stress coat (aloe/EDTA) | ☐ | ☐ | ☐ |
---
## 4. ENVIRONMENTAL CONTROLS
| Condition | Requirement | Verified? (✓) |
|-----------|-------------|--------------|
| Hot Climate | Gel packs (no ice) + insulated box | ☐ |
| Air Freight | Airline-compliant O₂ levels | ☐ |
| Long Haul | Battery aerator + spare O₂ cylinder | ☐ |
---
## 5. LOGISTICS
| Task | Status (✓) |
|------|-----------|
| Permits/documents ready | ☐ |
| Emergency contacts listed | ☐ |
| Route planned (avoid heat/stops) | ☐ |
---
### 🚨 EMERGENCY KIT
- Portable O₂/ammonia tester
- Glucose (PL10) / Calcium (PL15)
- Spare battery air pump
---
### 📝 NOTES
____________________________________________________________________
____________________________________________________________________
Inspector Name: _______________
Signature: ______
---
### 🔹 Survival Tips
- PL10: Transport at night, max 8h.
- PL15: Can handle 24h with O₂ support.
*(Laminate this sheet for reuse!)*
---
To convert this to PDF:
1. Copy-paste into Word/Google Docs.
2. Adjust fonts (use bold headers and **checkboxes**).
3. Save as PDF (File > Save As > PDF).
Need a version with your farm’s logo? Let me know!
LiveSeafood, [6/27/25 11:04 PM]
### Sea Cucumber Hatchery Setup & Production Guide
*(For Sandfish [*Holothuria scabra*], Tiger Tail [*Holothuria atra*], and other commercial species)*
---
## 1. Hatchery Design & Infrastructure
### 📍 Location Requirements
- Clean seawater (salinity 30–35 ppt, temperature **26–30°C**).
- Protected from storms & pollution (avoid industrial/urban areas).
- Access to electricity & freshwater (for larval rearing).
### 🏗 Facility Layout
| Section | Purpose |
|---------|---------|
| Broodstock Tanks | Mature adult conditioning & spawning |
| Spawning Tanks | Induced spawning & fertilization |
| Larval Rearing Tanks | Auricularia → Doliolaria → Pentactula stages |
| Settlement Tanks | Juvenile settlement on substrates |
| Nursery Tanks | Grow-out to 1–5 cm juveniles |
| Algal Culture Unit | Live feed (diatoms, *Chaetoceros*) |
| Water Treatment | Filtration, UV sterilization |
Tank Specifications:
- Round/oval FRP/fiberglass tanks (2–10 tons capacity).
- Shallow tanks (0.5–1 m depth) for larval rearing.
- Dark-colored tanks (reduces stress in larvae).
---
## 2. Broodstock Collection & Conditioning
### 🔍 Selection Criteria
- Healthy, disease-free adults (no lesions, active movement).
- Mature size:
- *Holothuria scabra*: ≥20 cm, 300–500 g.
- *Holothuria atra*: ≥25 cm, 400–600 g.
### 🌡 Conditioning Process
- Acclimatize in tanks (salinity/temperature matching wild habitat).
- Feed natural diet:
- Seaweed powder (30% protein).
- Microalgae (*Navicula*, *Chaetoceros*).
- Thermal shock method for spawning induction:
- Raise temp to 32°C for 1 hr, then return to 28°C.
---
## 3. Spawning & Fertilization
### ⚡ Induced Spawning Techniques
1. Temperature Shock (Most common)
- Expose to 5°C above ambient for 30–60 mins.
2. Drying + Sunlight Exposure
- Keep broodstock dry for 30 mins, then return to water.
3. Gonad Stimulation (Experimental)
- Serotonin injection (1–2 µg/g body weight).
### 🥚 Egg Collection & Fertilization
- Eggs: 100,000–500,000 per female.
- Sperm: Dilute in seawater before mixing with eggs.
- Fertilization rate: 70–90% under optimal conditions.
---
## 4. Larval Rearing (Auricularia → Pentactula)
| Stage | Duration | Feed | Key Requirements |
|-------|---------|------|-----------------|
| Auricularia | 8–12 days | Microalgae (*Chaetoceros*, *Isochrysis*) | Gentle aeration, 28°C |
| Doliolaria | 3–5 days | Mixed algae + yeast | Reduced light |
| Pentactula | 5–7 days | Benthic diatoms (*Navicula*) | Settlement substrates |
Water Quality:
- pH: 7.8–8.3
- Ammonia: <0.1 ppm
- DO: >5 mg/L
---
## 5. Juvenile Settlement & Nursery
### 🪨 Settlement Substrates
- PVC plates (coated with biofilm).
- Coral rubble/seaweed mats (natural texture).
### 📈 Nursery Grow-Out
- Tank size: 2–5 tons (stocking density: **1,000–2,000 juveniles/m²**).
- Feed:
- Diatom paste (daily).
- Seaweed powder (30% protein).
- Survival rate: 30–60% (if managed well).
---
## 6. Key Equipment Checklist
| Equipment | Purpose |
|-----------|---------|
| Air blowers & diffusers | Aeration for larvae |
| Water heaters/chillers | Temp control |
| UV sterilizer | Pathogen control |
| Microscopes (40–100x) | Larval monitoring |
| Algal photobioreactors | Live feed production |
| Settlement plates | Juvenile attachment |
---
## 7. Disease & Biosecurity Management
### 🦠 Common Diseases
- Skin ulceration (bacterial *Vibrio* spp.) → Treat with oxytetracycline baths.
- Parasitic protozoa → Formalin dips (50 ppm for 30 mins).
### 🔒 Biosecurity Measures
- Quarantine new broodstock (7–10 days).
- Disinfect tanks (iodine, hydrogen peroxide).
- PCR testing for pathogens.
---
## 8. Economics & Production Timeline
| Phase | Duration | Cost (USD) |
|-------|---------|-----------|
| Broodstock conditioning | 1–2 months | $2,000–$5,000 |
| Larval rearing | 20–30 days | $3,000–$8,000 |
| Nursery (to 1–2 cm) | 2–3 months | $5,000–$10,000 |
---
https://www.globalseafood.org/advocate/trials-test-effects-of-hormone-supplemented-feed-on-sex-reversal-of-freshwater-prawns/

[brine shrimp sieve](https://www.brineshrimpdirect.com/rotifer-sieve)
[green freshwater algae](https://www.e3s-conferences.org/articles/e3sconf/pdf/2018/06/e3sconf_icenis2018_04009.pdf)
*Diatoms are single cell eukaryotic microalgae*
Alka-siltzer and **LUGOL solutions**:
Phytoplankton are fixed with a Lugol-glycerol solution (2-3 % glycerol). Glycerol is required for flagellates.
Please look at European Committee for Standardization, 2015. According to the standard method (European Committee for Standardization 2006),
phytoplankton enumerations were carried out under an inverted microscope (Olympus CKX41) at magnifications of 400 and 600X. For each sample,
at least 350 settling units of the dominant species were counted. Phytoplankton biovolume was calculated by multiplying the cell density
and mean biovolume of the taxon, which was taken approximating geometric shapes of the least 25 individuals (Sun and Liu 2003).
graph LR;
%% Ocean sea water
%% x
subgraph Pacific["Pacific-Indonesia"]
direction LR
ocean_Temp["Pacific surface T= approx 26~30C
ocean in the eastern part after wallece line is deeper and cooler vs in the west side"]
end
subgraph Teripang["Teripang"]
direction LR
Hatchery["Hatchery Teripang"]
Nursury_Teripang("floating cage or Sea Pen
up to junivile")
Nursury_Teripang --> Growout["grow out in fixed pen(Keramba Tancap-Sea Pen)
Media subtract sand and seagrass(lumun)
+1m permonth"]
end
click ocean_Temp "https://www.globalseafood.org/advocate/trials-test-effects-of-hormone-supplemented-feed-on-sex-reversal-of-freshwater-prawns/" "Surface ocean temperature"
graph LR;
%% Collecting Rotifer eggs
%% x
subgraph Rotifer["Collecting and storing Rotifer"]
direction LR
Rotifer_eggs["Collecting rotifer eggs for store up to 2 years"]
Rotifer_dormat["store rotifer in cold temperature forup to 8 weeks"]
preserve_Pythoplankton["use Lugol to preserve pythoplaankton and zooplantok life (not the eggs) in dark botol"]
end
click Rotifer_eggs "https://www.globalseafood.org/advocate/trials-test-effects-of-hormone-supplemented-feed-on-sex-reversal-of-freshwater-prawns/" "Rotifer eggs"
click preserve_Pythoplankton "https://www.researchgate.net/publication/283211219_Marine_phytoplankton_preservation_with_Lugol's_a_comparison_of_solutions" "Lidol to preserve pythoplankton"
graph LR;
%% Freshwater prawn sex reversal
%% x
subgraph SexReverse["Sex reversal"]
direction LR
prawn_Male["Methyltestosterone experiment"]
prawn_Female["Dopamine experiment
Ovaprim Fish Hormone Domperidone Sgnrha Injection"]
sex_reverse_for_tilapia["Tilapia sex reversal in fry stage"]
end
FWprawn["Mixed Culture"]
FWprawn_M["Male mono culture
Teritorial"]
FWprawn_F["Female mono culture
higher density
more uniform
less teritorial vs male"]
click SexReverse "https://www.globalseafood.org/advocate/trials-test-effects-of-hormone-supplemented-feed-on-sex-reversal-of-freshwater-prawns/" "SexReversal Post Larva"
click sex_reverse_for_tilapia "https://www.globalseafood.org/advocate/artificial-incubation-hormonal-sex-reversal-promoted-tilapia-boom/" "Sex reversal for tilapia"
flowchart TD
A[Start: New Fish Arrives] --> B[Float Sealed Bag
15-20 mins for Temperature Equalization]
B --> C{Check Salinity Difference}
C -- "Salinity Δ ≤ .001 OR 1 ppt?" --> D[Quick Transfer:
Net fish directly into tank]
C -- "Salinity Δ > .001 OR 1ppt?" --> E[Short Drip:
30 mins max, use ammonia neutralizer]
D --> F[Discard ALL bag water]
E --> F
F --> G[Keep tank lights off for 4+ hours]
flowchart TD
A[Start: New Scallop Arrives] --> B[Float Sealed Bag
15 mins for Temperature Equalization]
B --> C[Transfer to Bucket
Ensure fully submerged, no air exposure]
C --> D[Begin Slow Drip Acclimation
2-4 drips/second for 45-120 mins]
D --> E[Water volume doubled?]
E -- Yes --> F[Discard half the water]
F --> D
E -- No --> G[Continue Drip]
G --> H[After 1-2 cycles, transfer specimen
Submerge bag underwater to release]
H --> I[Discard ALL bucket water]
I --> J[Light Acclimation: Keep lights off,
then gradually increase over weeks]
graph LR
%% Benur vannamei
Benur_Remark["

"]
BenurVPL_10["Vannamei Post Larva -10 days"]
BenurVPL_15["Vannamei Post Larva - 15 days"]
BenurVPL_10 ---> BenurVPL_15
BenurVPL_10 --->|"sell and ship to customer"| qnt_1_1
BenurVPL_15 --->|"sell and ship to customer"| qnt_1_2
subgraph select_req1_steps ["selection criteria"]
direction LR
select_strong["discard slow molting PL"]
end
BenurVPL_10 <---> select_req1_steps
subgraph shipment_req1_steps ["shipment to customer PL10 < 6 ~ 8 hours
PL-15 < 12~24 hours"]
direction LR
Stress_Test_1_1["stress test prior to packing
salinity test
salinity 0, 30 min then tank salinity 30 min
count life > 85%"]
weight_Test_1_1["number of PL count per PL1,Pl10,P12,P? statistics"]
salinity["Both require 26–30°C and salinity 25–35 ppt"]
qnt_1_1["PL-10 qnty: 5000-10000/L(seawater-1 L)
+2/3 filled with O2(2L)"]
qnt_1_2["PL-15 qnty: 3000-5000/L(seawater-1 L)
2/3 filled with O2(2L)"]
end
click BenurVPL_10 "https://www.seafdec.org.ph/2011/seabass-hatchery/" "Vannemei Benur PL-10"
click BenurVPL_15 "https://www.seafdec.org.ph/2011/seabass-hatchery/" "Vannemei Benur PL-15"
---
graph LR
%% Kerapu and seabass
FC0["Floating cage
Grading"]
FC1["Keramba tancap
Berpasir dibawah
Grading"]
FC2["Keramba dasar (0.5 m dari dasar)
Grading"]
P0["Pond - outdoor"]
P1(["Pond - indoor"])
subgraph pythoplankton["Marine Phytoplankton(microlgae and diatom) and/or freshwater pythoplanton
Media for MicroAlgae"]
direction LR
%% Microalgae cultivation can be carried out with freshwater, seawater, water from estuaries, wastewater from agricultural, industrial operations and domestic wastewater [15].
%% Algae media refers to the solution or culture in which algae grow.
%% Nutrient that contained in the tofu wastewater are very useful for the production of Chlorella sp.
%% Chlorella sp. usually grows in seawater
%% https://era.dpi.qld.gov.au/id/eprint/10985/1/SS-strain%20rotifer%20culture%20for%20finfish%20larvae%20with%20small%20mouth%20gape.pdf
culture_both["Chlorella vulgaris is green freshwater microalgae but seawater tolerance"]
culture_pytho["Culture Marine pythoplankton/MicroAlgae (chlorella sp)"]
culture_fresh_pytho["Culture freshwater microalgae Spirulina and Chlorella vulgaris"]
end
subgraph MacroAlgae["Culture seaweeds/MacroAlage"]
direction LR
seaweed["Life green/brown seaweed-Sargassum"] -->Powder_seaweed["Make dry powder seaweed"] --> Fermented_seaweed["Fermented dry power seaweeed"]
seaweed---> Process_1["harvest the seed for future propagation"]
end
subgraph Sandfish_Scallop["Culture Scallop/Sandfish"]
direction LR
MacroAlgae -->Sandfish["Sandfish and Scallop feed"]
culture_fresh_pytho -->Sandfish
end
subgraph plankton["Zooplankton culture"]
R0{"Rotifer Brachionus plicatilis Large size 20-25°C
Euryhaline
Quality depend on its feeds"}
R1{"Rotifer B. rotundiformis Small size 28-35°C
Low salinity
Quality depends on its feeds"}
Copepods{"Copepods Bigger than Rotifer"}
Monia{"Monia"}
Daphina{"Daphina"}
MicroAlgae["Green phytoplanktons"] --->R0
MicroAlgae -->R1
MicroAlgae ----> Copepods
end
Seabass1[/"Seabass Mature change sex 5kg ♀
Broodstock Rearing"/]
Kerapu1[/"Grouper Mature change sex ♂
Broodstock Rearing"/]
Kerapu(["Grouper: female at birth: ♀
Larva Rearing"]) --> |"size: 8-12cm cuci air tawar"| FC0 --> |"mature/adult size"| FC22["floating cage bigger net size
and/or tambak lebih besar ↑O2
Brookstock around 3kg"]
Kerapu -->|tidak perlu| FC1 --> FC22 --> Kerapu1
Seabass(["Asian Seabass: Male at birth: ♂
Larva Rearing"]) --> |"size: 8 - 12cm bersisik tidak perlu pasir"| FC0 -->|"Mature/adult size"| FC22 --> Seabass1
Lobster["Lobster rearing"] -->FC2
click culture_fresh_pytho "https://algaeresearchsupply.com/products/algae-research-supply-algae-culture-chlorella-pyrenoidosa?srsltid=AfmBOoqYbKG86RMM1kP_KYZvTHlMmcgQWKry5cNg-7a28B-AxddtVZfK" "culture Chlorella"
click Seabass "https://www.seafdec.org.ph/2011/seabass-hatchery/" "Seabass Hatchery"
click Kerapu "https://www.seafdec.org.ph/hatchery-seedstock/" "Grouper Hatchery"
click R1 "https://snextracts.com/collections/for-rotifers-and-artemia" "Rotifer eggs collection"
style Kerapu1 fill:gold, color:black
style Seabass1 fill:gold, color:black
style R0 fill:blue, color:white
style R1 fill:green, color: black
style culture_both fill:green, color:white
flowchart TD
T["Tilapia
iBEST (all Male) or
iEXCEL (Mixed-sex)"]
subgraph plankton["Plankton feed to Larvae"]
PyPL1["Pythoplanton"]
R0{"Rotifer L Type ΔT,
20°C-25°C,Euryhaline
B. plicatilis (L)
171-238µm "} --> R0_1["Rotifer Large eggs collection"]
R1{"Rotifer S Type ΔT,
28°C-35°C, Low Salinity
B. rotundiformis (S)
121-162µm"}-->R2_1["eggs collection
pick small eggs to have small size Rotifer"]
R2_1 --> SR1{"Rotifer SStype
Choose smallest eggs S type"}
Copepods["Copepods"]
Artemia["Artemia
Brine shrmp"]
eggs["Fish Eggs"]
PyPL1 --> Artemia
PyPL1 --> Copepods
PyPL1 --> R0
PyPL1 --> R1
PyPL1 --> SR1
end
subgraph hatchery["Hatchery Market Depend on Market"]
direction LR
Eggs["Eggs"] --> Larvae["Larvae"] --> Post_Larvae["Post Larvae"] -->Juvinille["Juvinille"]
end
subgraph growup ["growup Market size"]
direction LR
Market["different stage of Market"]
end
subgraph artemiaGrowth ["Artemeia Growth up Culture"]
direction LR
artemeia_eggs["Artemaia Eggs and larvae for feed"]
end
subgraph vitamin ["Vitamin C and B12 complex"]
direction LR
vitamin_feed["feed to rotifer prior to the feed for Hatchery"]
end
subgraph Pellet_Custard ["Pellet or Custaard"]
direction LR
Pellet_feed["Pellet feed"]
custard["wet or frozen feed"]
end
T --> hatchery
plankton --> hatchery
hatchery --> growup
style eggs fill:pink, color:black
click hatchery "https://www.seafdec.org.ph/hatchery-seedstock/" "Grouper Hatchery"
click Copepods "https://animalfact.com/wp-content/uploads/2024/06/Copepods-Copepoda.jpg" "Copepods"
flowchart TB
subgraph OCEAN9 ["fas:fa-ship
OCEAN 9 "]
direction LR
TP([Telaga Punggur])-->|ferry 11:00 web kapaltiket.com| A([BENAN]) --> |"00:45"| B([Tajuh Biru]) --> C(["Sei Tenam"]) --> D(["Senayang"]) <--->|"from 07:15 Pancur"| E(["Pancur"])
end
subgraph DRAGON5 ["fas:fa-ship DRAGON 5"]
direction LR
TP1(["Telaga punggur"]) --> CC(["Sei Tenam"])-->JG(["Jagoh"])
end
subgraph Anambas ["fas:fa-ship Anambas"]
direction LR
TP2(["Telaga Punggur"]) --"Rp. 494k"--> Letung --"Rp 495k"--> Terempa(["Terempa"])
end
subgraph Bintan["Pulau Bintan/Tanjung Pinang"]
direction LR
BTP(["Tanjung Pinang"])
end
TP <--.--> TP1 <--.--> TP2
style A fill: black, color: white
style B fill:grey, color:#fff
style TP fill:blue, color: whit
style TP1 fill:blue, color: white
style TP2 fill:blue, color: white
click BTP "https://www.welcometobintan.com/images/map.jpg" "Tanjung Pinang"
flowchart LR
subgraph subgraph1["Benur Bening Lobster"]
direction TB
top1["🦞 ≤ 2 gr (≤ 2months)
SR 30%~40%
Nature < 0.01%"] --> bottom1["🦞 ≥ 5gr (2 - 3 months) SR ≥ 70%~80%"]
end
subgraph subgraph2["Top floating or/and
Bottom floating cage(Krankeng)"]
direction TB
top2[top] --> bottom2[bottom]
end
subgraph subgraph3["Top floating or/and
Bottom floating cage(Krankeng)"]
direction TB
top3[topx] --> bottom3[bottomx]
end
outside:::asNode --> subgraph1:::asNode
outside ---> top2 -->top3
style subgraph2 fill:orange
classDef asNode fill:grey, color:orange
pie title Investment weighting factor
"Money" :60
"Labour" : 35
"Technology-Consultant" : 5
---
pie title Investment Sharing with Masanak Island
"PT_Innovare" :75
"Mitra" : 15
"Desa" : 10
### [PH sensor manual](https://raaflahar.medium.com/ph-4502c-sensor-diymore-how-to-use-and-calibrate-using-arduino-uno-r3-3afc2b96631)
### How to Collect Rotifer Eggs: A Complete Guide
[Selective breeding rotifers](https://library.enaca.org/Grouper/HalongWorkshop/Inneke.pdf)
RESTING ROTIFER CULTURES
Rotifers, like Artemia, produce resting eggs or cysts. Yet, rotifers are uniquely different
since they reproduce asexually (without sex) and only one rotifer becomes millions in a matter of days. Florida Aqua Farms pioneered this process and offer vials of lab cultured rotifer cysts. Cysts stored in a freezer can last over two years. Remove cysts from the vial, place in 1/2″ of water, cover, place in continuous low light. Hatching and feeding commences within 24 to 36 hours and reproduction about 18 hours after hatch. Resting eggs of the saltwater rotifer Brachionus manjavacas (specified by S) and the freshwater rotifer Brachionus plicatilis (specified by F) are now available. We offer only the “L” strain which are 130-340 µm long compared to new hatched Artemia which are 450-500 µm long. Smaller strains can be cultured by consistently sieving normal cultures for smaller individuals and culturing them. To determine what size inoculant would best suit your needs we offer a theoretical calculation of inoculant size and the approximate days for a population to reach 1 billion. Results vary depending on water quality, food and temperature.
*(For Aquaculture, Aquariums, or Live Feed Production)*
Rotifers (especially *Brachionus plicatilis*) are crucial live feed for fish/shrimp larvae. Their resting eggs (called *cysts*) allow long-term storage and easy culture revival. Here’s how to collect them efficiently.
---
[dormant rotifer](https://www.redono.fi/rotifers/)
## 1. When & Where to Find Rotifer Eggs
### 🔎 Natural Habitats
✔ Brackish ponds (salinity 10–25 ppt)
✔ Coastal lagoons (look in sediment)
✔ Aquaculture tanks (check tank bottoms & filters)
### ⏳ Best Conditions for Egg Production
- Stress triggers (food shortage, crowding, temperature swings)
- Seasonal – Often appear as water cools in autumn
- In culture – Eggs accumulate after population crashes
---
## 2. Collection Methods
### Method 1: From Wild Environments
Materials Needed:
- Plankton net (50–100µm mesh)
- Sieve (20–30µm mesh to separate eggs from debris)
- Turkey baster or pipette
- Microscope (for verification)
Steps:
1. Scrape sediment from pond/lagoon edges.
2. Filter through 100µm net (removes large debris).
3. Wash through 30µm sieve (retains eggs, which are ~50–100µm).
4. Examine under microscope – Look for brownish oval eggs (see image below).
### Method 2: From Cultured Rotifers
Materials Needed:
- Airline tubing (for siphoning)
- Bright flashlight (eggs sink, shine light to spot them)
- Fine mesh (30µm)
Steps:
1. Stop aeration – Let rotifers settle for 10 mins.
2. Siphon bottom debris where eggs accumulate.
3. Filter through 30µm mesh – Retain eggs, discard water.
4. Rinse with freshwater (briefly) to kill pathogens.
---
## 3. Identifying Rotifer Eggs
- Size: 50–100µm (varies by species)
- Shape: Oval, sometimes with ridges
- Color: Brown/amber when mature
- Under microscope: Thick-walled, often slightly asymmetrical

*(Left: Rotifer eggs | Right: Algae/dirt for comparison)*
---
## 4. Storing & Hatching Eggs
### Storage (for months/years)
✔ Dry storage – Keep in cool, dark place (4°C) with silica gel
✔ Wet storage – In saltwater at 4°C (slows metabolism)
### Hatching (when needed)
1. Rehydrate in 15–20 ppt saltwater.
2. Aerate gently (too much turbulence prevents hatching).
3. Add food (Nannochloropsis or yeast) after 24h.
4. First hatchlings appear in 1–3 days.
---
## 5. Troubleshooting
| Problem | Solution |
|------------|-------------|
| No eggs in culture | Induce stress (starvation, temp shock) |
| Eggs not hatching | Try lower salinity (10 ppt) or warmer water (25°C) |
| Fungus on eggs | Dip in 3% hydrogen peroxide for 30 sec |
| Too much debris | Use sugar flotation method (mix sample with 50% sugar, spin, eggs float) |
---
## 6. Advanced: Increasing Egg Production
- "Boom-and-bust" cycling – Let culture crash naturally
- Temperature manipulation – Shift between 15°C and 25°C
- Food limitation – Starve for 2 days, then feed heavily
---
### Final Tips
✅ Commercial sources sell rotifer eggs (~$10/g) if collecting is difficult.
✅ Label samples with date/location for strain tracking.
✅ Use eggs within 2 years – Viability declines over time.
Need a rotifer culture guide next? Let me know! 🦠
---
# Vannamei highlist
Highlights
* Clear differences in feeding behaviour between male and female Litopenaeus vannamei.
* Males arrived to the feeding tray(size tray: 60cm x 60cm or 100cm x 100cm) faster and fed for longer than females.
* Females exhibited greater levels of inactivity and more signs of stress than males.
* These behavioural differences are important when choosing mono- vs mixed-sex culture.
## Marketing shrimp
* [di lampung](https://indomina-ils.com/)
* [Daftar pellet](https://kkp.go.id/storage/Materi/daftar-pakan-ikan-dan-udang-terdaftar67bc05bdc25c3/materi-67bc05bfe464f.pdf)
## Check fish blood on mineral
- Contains Mg,Ca, etc
- Compare the feed, blood and wild
- Check blood to identified short of different mineral
## Rotifer
Copepods and rotifers are both types of small aquatic organisms, particularly important in marine and freshwater ecosystems
as they are a food source for many fish and other invertebrates. However, they belong to
different groups: copepods are crustaceans (Arthropoda), while rotifers are rotifers (Rotifera).
Copepods are more common in reef tanks, where they contribute to the tank's overall biodiversity
and can be cultured. Rotifers, on the other hand, often require specific conditions
and are typically cultured separately, but they can be a valuable food source, especially for corals.
Copepods:
Classification: Crustaceans (Arthropoda).
Habitat: Often associated with live rocks in reef tanks.
Diet: Primarily feed on phytoplankton, contributing to nutrient cycling in the tank.
Reef Tank Role: Provide biodiversity, contribute to nutrient cycling, and serve as a food source for certain fish and invertebrates.
Cultures: Can be cultured in refugiums or other dedicated systems.
Rotifers:
Classification: Rotifers (Rotifera).
Habitat: Found in freshwater environments, including lakes, ponds, and even temporary puddles.
Diet: Primarily feed on algae and other small organisms.
Reef Tank Role: Serve as a food source, especially for corals and larval fish.
Cultures: Typically cultured in separate tanks, often using algae or specialized feed.
# Eel (ikan sidat)
* Tambak deep 0.80 ~ 1.20m
* pH : 6.5 ~ 8.5
* Temperature : 20°C~ 28°C
* Change water 20% water daily
* RAS change water : 10-30% daily ( mineral deficiency)
## [High pressure (30.40 inHg and higher) and Low Pressure (29.60 inHg or lower) on Ocean about fish](https://wildhunter.ie/blogs/fishing-blog/effects-of-air-pressure-on-fish)
Barometric pressure is the weight of the atmosphere in a specific area, usually measured in millibars (mb) and inches of Mercury (inHg).
A number of factors can influence the barometric pressure in a given area, including altitude, wind patterns, and temperature.
* **A normal barometric pressure reading is typically between 29.70 inHg and 30.40 inHg**
* when there’s low barometric pressure and less pressure on a fish’s body, the bladder expands.
Fish may swim deeper where the water pressure is higher as a way to adjust, becoming less interested in feeding until conditions normalize.
* As we mentioned above, most agree that fishing is slow on both high-pressure and low-pressure days.** If the barometric pressure is above 30.50 inHg or below 29.60 inHg**, you might be better off waiting until the pressure normalizes.
* High Pressure (Good Weather): During periods of high atmospheric pressure, the air pressing down on the water is greater,
slightly compressing the water. Fish with swim bladders experience a slight reduction in the organ’s volume,
making them naturally sink a bit. To counteract this, they expend energy adjusting their position in the water column,
which can make them less active or cautious, influencing their feeding and movement.
* Low Pressure (Bad Weather): When low-pressure systems approach, such as before a storm, the pressure exerted on the water decreases.
This reduction causes the swim bladder to expand, making fish feel more buoyant. Fish typically respond by moving to deeper waters
to alleviate the over-buoyancy and find stability, often decreasing their feeding activity in these moments.
This is why anglers sometimes find it harder to catch fish before a storm.
- impact by the moon daily
- impact by the sun yearly
## *Teknik Pembibitan Tiram Mutiara* (Pinctada maxima)
Kegiatan pendederan tiram mutiara, lanjutnya, merupakan pemeliharaan dari ukuran spat 1-2 cm,
hingga menjadi tiram ukuran 6-9 cm dan siap insersi (10 cm atau lebih), menjadi salah satu segmen
usaha yang potensial bagi masyarakat pesisir karena segmentasi usaha pendederan tiram mutiara cukup mudah dan murah karena tidak memerlukan pakan
https://sbinews.id/nelayan-nusantara-belajar-budidaya-teripang-di-negeri-tirai-bambu/
Teripang pasir dapat tumbuh sampai ukuran 40 cm
dengan bobot 1,5 kg. Kematangan gonad teripang pertama
kali terjadi pada ukuran rata-rata 220 mm. Teripang betina
mampu menghasilkan telur dalam jumlah yang sangat
banyak hingga mencapai sekitar 1,9 juta butir telur. Daur
hidup biota ini dimulai dengan telur yang dibuahi yang
akan menetas dalam waktu sekitar 2 hari (Martoyo et al.,
2000).
Biasanya teripang akan muncul di permukaan dasar
perairan pada malam hari untuk mencari makan. Pada siang
hari hewan ini membenamkan dirinya di habitatnya seperti
pasir atau sela-sela batu karang untuk melindungi dirinya
dari pemangsa. Teripang berperan penting sebagai
pemakan deposit (deposit feeder) dan pemakan suspensi
(suspensi feeder).
Saat ini BBPBL memiliki 120 lubang KJA modern berbahan High Density Polyethylene (HDPE) buatan Aquatec.
Pipa-pipa yang terbuat dari bahan Polyethylene ini disusun dengan menggunakan baut stainless steel grade 304,
dilengkapi bantalan sehingga mampu menjaga kelenturan terhadap gelombang laut setinggi 2 m.
[manual culture sandfish](https://www.ctsa.org/files/publications/Sandfish_Manual_2024.pdf)
## *Proses Budidaya Abalon* (Haliotis spp.)
.
## [Pakai UV tetapi tetap penyakit](https://fistx.co.id/id/articles/sudah-pakai-uv-di-tambak-udang-tapi-kenapa-masih-ada-penyakit-menyerang)
## Jekyll
* [jekyll github](https://notepad.onghu.com/2023/using-mermaid-in-a-textile-post-jekyll/)
* [look at github](https://stuff-things.net/2025/01/19/mermaid-diagramming-in-jekyll-in-2025/)
* [jekyll pwa](https://moldstud.com/articles/p-how-to-create-an-engaging-jekyll-based-pwa-a-step-by-step-guid
* [Markdown Note](https://users.ssc.wisc.edu/~hemken/Stataworkshops/stmd/Markdown/tableandblocks1.html)
* Webassembly mermaid
* https://github.com/open-webui/open-webui
* https://www.journal.unrika.ac.id/index.php/jurnaldms/article/view/543/0
* https://www.corenet.gov.sg/ecatalog/Pages/corenet%20add.txt
* [depth oceans vs o2](https://home.miracosta.edu/jturbeville/dana%20point%20floating%20lab/water%20chemistry.htm)
* [Overlay image or text](https://imagekit.io/blog/css-image-overlay/)
* [c++ plus rust](https://www.encodian.com/blog/create-and-insert-a-document-approval-sheet-using-powerautomate-approval-data/)
* The waters around Lim Chu Kang are “more brackish” and suitable for rearing milk fish and grey mullet,
and he is currently the biggest producer of both types of fish in Singapore.
* The waters off Changi, meanwhile, are saltier and suitable for fish that are more popular with Singapore consumers.
They include red snapper, barramundi (Asian sea bass), golden pomfret and sea perch.
1. item 1
1. | Column One | Column Two |
| --- | --- |
|
|
|
- some text
| Column One | Column Two |
| --- | --- |
| data cell one | data cell two |
③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩
⓪
① ② ③ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩
⑪ ⑫ ⑬ ⑭ ⑮ ⑯ ⑰ ⑱ ⑲
🄰 🄱 🄲 🄳 🄴 🄵 🄶 🄷 🄸 🄹 🄺 🄻 🄼 🄽 🄾 🄿 🅀 🅁 🅂 🅃 🅄 🅅 🅆 🅇 🅈 🅉
Ⓐ Ⓑ Ⓒ Ⓓ Ⓔ
⓿
❶ ❷ ❸ ❹ ❺ ❻ ❼ ❽ ❾ ❿
⓫ ⓬ ⓭ ⓮ ⓯ ⓰ ⓱ ⓲ ⓳ ⓴
The Pacific oyster can tolerate a wide temperature range from -2° to 35°C, but for optimal reproduction temperatures over 20°C are required. This may explain why there appear to be no self-sustaining populations of Pacific oysters on the West Coast and why oyster farming in this region requires continuous seeding in order to be sustainable.
Because oysters are filter feeders, contaminants may concentrate in the oyster’s flesh. During a post-harvest process called conditioning, oysters are kept in tanks of purified seawater for at least three days to eliminate possible contaminants by maximising their natural filtering activity.
After conditioning, oysters are inspected and packed into polystyrene boxes and kept cool with gel packs or ice bottles before being transported. The cool chain is maintained at between 4 and 8℃.
Think of Pieces as a technical Tinkerbell from Peter Pan[^2].
[^2]: This is a fairytale about a forever young boy who takes a group of British children to his home island, Neverland.
Depending on how much cookie dough you eat, you’ll have about ==20-22== cookies from this recipe!
Benur PL7: Rp. 60 diluar harga transpotasi
Masalah batam kirim ke bengkalis. Tranport di buka.
Di kasih artemia sebelum kirim
Salinitas test
Chlorine test LD_50
# [embedded html to pdf](https://www.encodian.com/blog/create-and-insert-a-document-approval-sheet-using-powerautomate-approval-data/)
[^b]: Now I am a footnote too.


Contains the following phytoplanktons:
* Green phytoplanktons: Nannochloropsis oculata,Tetraselmis chui, Chlorella, Dunaliella tertiolecta, Japanese Chlorella, Chlorella vulgaris.
* Golden phytoplanktons: Tisochrysis lutea, Pavlova, Isochrysis galbana.
* Red phytoplankton: Rhodomonas salina, Rhodomonas lens, Porphyridium creuntum
* Diatom strains include: Chaetocerors calcitrans, Pheaodactylum tricornutum, Thalassiosira weissfloggii.
For best shelf life, store in the back of the fridge away from the light, with temperatures ranging from 2.78°C - 5.55°C degrees. We store phytoplankton at 2.78 degrees in a fridge with no light source.
[Order form](https://www.seafdec.org.ph/wp-content/uploads/2020/12/Commodity-Order-Form_rev2020.pdf)
-----------------
|Culture Pond |🄰 indoor or
🄱 outdoor|Pakai HDPE| Symbol|
|:-----------|:-----------------|:-------|:---------|
|Floating cage| Outdoor | ① |
|Keramba dasar
0.5m from bottom|Outdoor | ② |
|Keramba tanjab| |③ |
|tambak/pond | Outdoor |④ |
|hapa di tambak| Outdoor |⑤ |
| | Indoor |
----------------
---------------
|Fish/Crustean | FCR wet/dry/
pellet(sink/float)|Culture Ponds
days/weeks/months|Stage Description
Larvae,Juvinele,Adult/
Temperature|Need fish meal|
|:-------------|:------------------------------|:-----------|:-----------|:----------|
|Tilapia |Easier and
no need much knowledge | |No need fish meal, soybeaan protein|
|Tuna | 10:1|[swift memory safe](https://forums.swift.org/t/prospective-vision-optional-strict-memory-safety-for-swift/75090)|yes, due to fish oil|
|Salmon|2:1|-|yes, due to fish oil|
|**Red Grouper(bottom dweller)**| | |yes, due to fish oil, candidate for cages like lobster|
|**Jack Red Snapper(Kakap merah bakau)
(Lutjanus argentimaculatus)**| ||Telur sifat apung seperti kakap putih
juvinelle bisa hidup di air tawar|
|Black grouper (top dweller)| || |
|ikan tirusan| | | |
|Asian seabass male at birth vs black seabass female at birth|||
--------------
[Grow-out Culture](https://repository.seafdec.org.ph/bitstream/handle/10862/36/adsea91p003-012.pdf?sequence=1&isAllowed=y)
---
Polyculture of sea bass using tilapia as forage fish is often practiced.
Growth and survival were higher among sea bass reared with tilapia in the same
compartment than among those reared in ponds with net partition to separate
the larger prey from predator (Triño, unpublished).
[Tiger Prawn floating cage growout culture](https://eprints.cmfri.org.in/10937/2/46459-150550-1-PB%20%283%29.pdf)
## Markdown Heading
* ~~strikthrough~~
* Lake Como [84km north of Milan] and Lake Garda [137km from Milan]
* [style in flowchart mermaid instead of graph](https://www.freecodecamp.org/news/use-mermaid-javascript-library-to-create-flowcharts/)
* [SAP Ui5 architecture](https://www.tutorialspoint.com/sap_ui5/sap_ui5_architecture.htm)
* [SAp U5 hana](https://sapui5.hana.ondemand.com/sdk/#/topic/28b59ca857044a7890a22aec8cf1fee9)
* [sap ui5 example](https://openui5.org/)
* [sap flori tutorial](https://ui5.sap.com//#/topic/3da5f4be63264db99f2e5b04c5e853db)
* [Flori web design](https://experience.sap.com/fiori-design-web/action-placement/)
* [shell flori tool bar](https://experience.sap.com/fiori-design-web/flexible-column-layout/)
* [sap grid view html](https://experience.sap.com/fiori-design-web/flexible-grid/)
* [Dioxus](https://codesandbox.io/p/github/mattdanielbrown/Dioxus-Example-Projects/master?file=%2Fecommerce-site%2Fsrc%2Fmain.rs%3A19%2C26)
* [Bookmark](https://www.croftsoft.com/library/tutorials/rust-dioxus-project-setup/)
* [docsite dioxus tailwind components](https://github.com/42Angouleme/dioxus-tw-components)
## Sebass vs Snapper
- diffferent
- which one taste better
|The table below provides a quick comparison of the availability and cost of snapper and grouper:|
|------------------------------------------------------------------------------------------------|
|Fish| Availability| Cost|
|----|--------------|--------|
|Snapper| Common in Gulf of Mexico and Caribbean| Higher price due to demand and difficulty of catching|
|Grouper| Common in Atlantic and Pacific oceans| More affordable due to abundance and ease of catching|
## Snapper vs Grouper
Both of these species are known for having firm yet moist meat while having the added health benefit of being low in fat. Snapper is slightly sweeter and the meat more delicate, especially when grilled, than Grouper. Most compare its flavor and texture to be similar to that of halibut or sea bass. Grouper on the other hand is milder or more subtle in flavor making it perfect for absorbing either dressings or marinades
[Singapore Snapper Hatchery](https://www.sfa.gov.sg/docs/default-source/food-science-and-technology/science-poster_development-of-hatchery-technology-for-crs-v4-revised-29-june-2022-003.pdf)
[Spawing](https://www.sfa.gov.sg/docs/default-source/food-science-and-technology/application-of-endocrine-techniques-in-fish-spawning.pdf)
[Treatment](https://www.sfa.gov.sg/docs/default-source/food-science-and-technology/monogeneans-disease-card-v2-english.pdf)
[Start](https://www.sfa.gov.sg/docs/default-source/food-farming/industry-guides/sfa-sea-farming-guide326598c6-3d7b-4fb5-8f80-9b3228fd595c.pdf/)
## A shallow intake is far more exposed to the dynamic conditions of the immediate coastal environment. The main consequences are:
1. Extreme Temperature Fluctuations:
· Problem: Shallow water heats up rapidly under the sun and cools down quickly at night or in cold weather. The hatchery lacks a large, thermally-buffered water source.
· Impact: Larval stages of most marine species (e.g., shrimp, fish, oysters) are incredibly sensitive to temperature shifts. Sudden changes can cause:
· Thermal Shock: Direct mortality.
· Increased Stress: Leading to lower immunity and higher susceptibility to disease.
· Unpredictable Development Rates: Throwing off feeding schedules and metamorphosis, leading to uneven batches.
2. High Turbidity and Siltation:
· Problem: Wave action in shallow areas easily resuspends sediments, clay, and organic particles. Even a light storm can turn the water muddy for days.
· Impact:
· Clogged Filters: Rapidly fouls sand filters, cartridge filters, and sieve screens, requiring constant backwashing and maintenance.
· Gill Damage: Fine particles can damage the delicate gills of larvae and broodstock, impairing respiration and overall health.
· Reduced Light Penetration: Can affect algal cultures (if used for live feed) within the hatchery's system.
3. Poor and Fluctuating Water Quality:
· Problem: Shallow, near-shore water is heavily influenced by land-based activities.
· Impacts:
· Pollutants: Risk of contamination from agricultural runoff (pesticides, fertilizers), sewage, oil, or industrial waste.
· Eutrophication: High nutrient levels from runoff can lead to algal blooms. When these algae die, they decompose and consume oxygen, leading to hypoxic (low oxygen) conditions.
· Salinity Instability: After heavy rainfall, shallow areas can experience a drastic drop in salinity (hyposalinity), which is lethal to marine organisms.
4. Low Dissolved Oxygen (DO) Levels:
· Problem: Oxygen solubility in water decreases as temperature rises. Warm, shallow water holds less oxygen. Furthermore, biological activity (decomposition of organic matter) consumes oxygen.
· Impact: Chronically low DO levels stress animals, suppress appetite, slow growth, and can directly cause mortality.
5. High Load of Pathogens and Predators:
· Problem: Shallow coastal waters are often rich in biological life, including the larvae of predators (e.g., jellyfish, crab larvae) and parasites, as well as bacteria and viruses (e.g., Vibrio spp.).
· Impact: The intake pipe can act as a direct conduit for these threats into the culture tanks. This constant bombardment makes disease outbreaks much more likely and diUfficult to control.
6. Vulnerability to Physical Disturbances:
· Problem: The intake structure and pipeline itself are exposed.
· Impact:
· Wave Action: Can damage the intake head or pipeline.
· Siltation: The intake can become buried in sand or silt during storms, cutting off the water supply entirely.
· Boating & Fishing: Higher risk of damage from anchors or fishing gear in shallow waters.
---
How Hatcheries Mitigate These Problems
A well-designed hatchery will never rely on raw, untreated water from a shallow intake. It must invest heavily in infrastructure to process the incoming water. This adds significant operational cost and complexity.
1. Intake Design:
· Extending the Intake: The best solution is to extend the intake pipeline hundreds of meters out to sea, beyond the surf zone and into deeper, more stable water.
· Subsurface Intakes: Using wells (beach wells, seabed filters) that draw water that has been naturally filtered through the sand and substrate. This provides excellent pre-filtration and thermal stability.
2. Sophisticated Water Treatment:
· Sedimentation Tanks / Settling Ponds: The first step is to let heavy particles settle out.
· Multi-Stage Filtration: Using rapid sand filters, cartridge filters, and UV sterilizers to remove particles and pathogens. This requires constant maintenance.
## hardshell vs softshell result in high and low salinity shirmp culture
Hard shell lobsters also have less water weight, while soft
shell lobsters contain more water. This difference in yield is
reflected in the lower pricing of soft shell lobsters. For comparison, the average
yield for hard shells is roughly 20% to 28% meat, while soft shells contain around 15% to
20% meat.
Low Salinity
Less then 5ppt:
1. Apply sea salt
* 100 kg/Acre weekly twice any time
2. Add high salinity water New worldlife
3. Feed supplement sea salt for low salinity
* 50g/kg feed
5.Fluctuation Water Parameters
6.Big Size PL Neworldlife
7.Insufficient Minerals
8.Use One or More then Mother Shrimps
Batam
---
* Industry sampai jembatan 5.
* fiber malaysia kapalnya lebih tebal daan berat jadi lebih stabil
* Mesin kapal bisa jadi dua atau 1 (40 HP atau (2x 15HP)
* Pulau Ketam malaysia ( hatchery and growth out sea pans) - outer island near Kuala Lumpur ( near Riau)
## Kerapu
### di keramba apung
* Pencegahaan penyakit dengan mencelupkan kerapu ke air tawar 15 minutes? Membunuh hama air laut
* Ukuran 7 cm sampai 0.5 kg untuk macan 8 bulan dan bebek 12 bulan
* Grouper culture has three phases:
1. the larval stage where fish is reared for 15-60 days,
2. the nursery stage where fish is cultured for 1-2 months, and
3. the growout stage where fish is reared for 6-8 months.
Grouper need to be sorted and size-graded every week to prevent cannibalism. Other routine procedures
include feeding, net maintenance, stock sampling, and monitoring water quality
* Hatchery phase
1. Stock 20-30 larvae/liter in 3-25 tons rearing tanks
2. Feed larvae Nannochlorum, rotifer, Artemia, and articial diet
3. Transfer larvae to marine cages when larvae reach the total length of 2-3 cm (15-60 days)
* Nursery phase
1. Stock 2-3 cm fry in 1 x 2 x 1.5 m hapa nets at 75-100 fry/m3
set inside floating net cages. Uniform fry size should be strictly observed during stocking.
2. Install hover-type lamp to attract grouper prey such as copepods, mysids, young fishes, and crustacean larvae
3. Feed fry artificial diet or finely chopped frozen or fresh low value fish 4-6 times a day
4. Transfer fry to grow-out cages or ponds after 45-60 days or when total length is 6-10cm
* Feed
1. Feed can change color ofsome groupers such as shrimp feed
2. head of the shrimp ( trash can be used to feed the grouper): fresh or uncooked or cook
* [Grouper Hatchery](https://youtu.be/IkKztRINSkQ?si=8Un_Fzv7SzwtXoNy)
- Tiger : take 2 years
- hybrid can growth to around 15 kg the second year
- Male tiger grouper as broodstock 15kg
* Prefer dark and rest at the bottom
* When mature adult feed the whole fish
* adult kerapu feeds: kepala prawn,trash fish, squid, pellet, dll
* [Prevent disease in grouper](https://www.seafdec.org.ph/wp-content/uploads/2021/08/prevention-control-of-parasites-in-groupers.pdf)
* small prawn eats the grouper lice but not too big which groupr will eat the praawn
* A freshwater dip is a treatment for saltwater fish, like groupers, to help remove parasites.
It involves temporarily placing the fish in fresh water for a short period, typically 3-5 minutes, to kill or loosen parasites.
This is a pre-quarantine treatment and should not be relied upon as the sole treatment for a disease.
Weak fish:
Avoid freshwater dips on fish that are already weak or dying, as they can be fatal.
Potential side effects:
Some fish may have difficulty returning to their normal salinity after a freshwater dip, and may need assistance to regain their balance.
Aeration:
Ensure the freshwater dip container has adequate aeration to provide oxygen to the fish
* obat bius untuk ikan air tawar
Obat Bius Ikan Ramah Lingkungan dari Daun Pepaya
# Minyak cengkeh
Efektivitas Pemberian Minyak Cengkeh sebagai Obat Bius pada Ikan Kerapu Cantang
Penelitian penggunaan minyak cengkeh dengan konsentrasi 5, 10 dan 15 ppm sebagai bahan anastesi pada transportasi tertutup ikan Kerapu cantang memberikan hasil tingkat kelangsungan hidup sebesar 76,67%, 86,67%, dan 80%, sedangkan tanpa penambahan minyak cengkeh tingkat kelangsungan hidup ikan kerapu adalah 60% pada pada transportasi dengan pemberian MS 222 70 ppm tingkat kelangsungan hidup mencapai 90%.
Minyak cengkeh merupakan salah satu obat bius alami yang telah dikembangkan dan digunakan sebagai pengganti obat bius kimia seperti MS 222.
Minyak cengkeh diperoleh dari ekstrak daun, batang dan bunga tanaman cengkeh. Minyak cengkeh diketahui mengandung senyawa eugenol yang bersifat
analgesik atau mengurangi rasa sakit, selain itu juga mengandung senyawa kartiofilin yang bersifat sebagai antiseptik. Minyak cengkeh digunakan sebagai anestesi lokal pada hewan dan manusia dan memiliki efek sedasi pada hewan air. Namun senyawa tersebut juga memiliki aktivitas insektisida sehingga jika digunakan secara berlebihan dapat menyebabkan kematian pada ikan.
Pemberian anestesi minyak cengkeh juga mempengaruhi total leukosit pada ikan kerapu setelah transportasi selama 10 jam.
Pada penelitian ini jumlah leukosit mengalami perbedaan bermakna antara perlakuan negatif dan kontrol.
Leukosit merupakan salah satu bagian darah yang berfungsi sebagai antibodi non spesifik. Saat ikan mengalami kondisi stres,
jumlah leukosit dapat meningkat sebagai bentuk tindakan pertahanan akibat stresor.
**[Tricaine methane sulfonate (MS‐222)](https://ehs.msu.edu/lab-clinic/animal/ms222.html)** is a commonly used fish/amphibian anesthetic. The compound is an isomer of benzocaine.
It is a solid at room temperature. Tricaine methane sulfonate has an oral rat LD50 of 5200mg/kg,
which does not meet the OSHA classification of a toxic chemical.
Teknik Imotilisasi Ikan Kerapu Cantang (Epinephelus sp.) Menggunakan Ekstrak Biji Kecubung (Datura Metel L.)
---
This study is about fish anesthesia using natural anesthetic ingredients. Natural anesthetic ingredients
aim to reduce metabolism in Epinephelus sp. grouper fish. The immobilization method can be used to
minimize high metabolism in Epinephelus sp. grouper fish. The purpose of this study was to obtain the
influence of Datura metel L. seed extract on the onset time, recovery time, and live graduation of grouper
fish Epinephelus sp. The results of the study, using extracts of natural anesthetic ingredients Datura
metel L.seed with concentrations of 25%, 30%, and 35% can be concluded that it has a different influence
(P<0.05) on the onset and recovered grouper fish. The survival rate of cantang grouper is 100% at each
concentration. Amethyst seed extract concentration of 35% w
### di keramba tanjab yang punya pasir
-tidak perlu di cuci air tawar karena kerapu bisa mengesek dengan pasir untuk menghilankan hama seperti kutu putih
- kerapu sanu mulutnya agak kecil di bandinggkan kerapu cangteng
* Bisa beli telur sampai pendederan benur
# [Pulau Petong](https://earth.google.com/web/@0.53118441,104.4134147,231.8783569a,778318.1988886d,35y,44.54282763h,0t,0r/data=CgRCAggBOgMKATBCAggASg0I____________ARAA)
- Bor 12 m ait laut, 30 m air tawar (4" diameter pipe)
- 2 pipe air tawar, 1 pipe air laut
- Pulau petong air tawar pemerintah (kaporit tinggi)
- air laut dati pesisir karang sangat jauh dari bulan ke bulang... sehingga keramba ampung maupun dasar harus agak jauh dari panti pulau.
- tergantung stucture karang
-[wave et](https://tides4fishing.com/id/kepulauan-riau/tandjungpinang-bintan-island)
# [Fisherman boat](https://explorer.com.my/product/e190-floorboard/)
## Perahu fiber lebih dangkal karena ringgang untuk pulau yang berkarang karena karang bisa membuat perahu itu pecah/rusak
- fiber perahu ika dari malaysia (40HP=40PK- 54juta)-need 15PK (15PK=32 juta)
- Bor air : 12 m air laut, 30m air tawar
- di palemenbang 120m dapat air minum
- kaporit terlalu tinggi di danau di atas petong
- cumi yang di es berwarna merah keesokan harinya
- 1 knot =1.852km/hours
- [fisherman boats](https://jixingxincomposite.en.made-in-china.com/product/NJpUiKoPaQYS/China-New-Design-High-Quality-Motor-Boat-Boat-Fishing-Fiberglass-Boat.html)
- inyak 40pk motor (oil consumption 20L/hours)
- Water coloumn
- air laut bataam diambil dari kedalaman 12m, di Norwegia diambil dari kedalamaan 75m dari permukaan laut
- fiber boat puny hendra pulaupetong:
-17" dan 21" (5.5 m ~ 7 m) , boat: 27 juta
- mesin yamaha 15HP ( 2x)
- supaya temperature nya hampir sama dengan culture temperature
- Pulau Benan: Judit, Petong Hendra
- pH nya konstant di kedalaman ?
- [cuaca dan agin di pulau petong](https://www.windy.com/0.629/104.082?0.626,104.094,15)
- 65% kapal nelayan adalaah terbuat dari kayu (10`15 year)
- Mesin bukan dmeesia kapal akibatnya mudah terjadi korosi
-[serial port in rust](https://users.rust-lang.org/t/how-to-use-serial-port-in-dioxus-desktop-app/99845/3)
# [ikan tirusan-(Otolithoides pama)](https://www.mongabay.co.id/2024/09/16/ikan-tirusan-harga-selangit-jadi-primadona-khawatir-penangkapan-berlebih/)
- [(Otolithoides pama)](https://www.themimu.info/sites/themimu.info/files/assessment_file_attachments/GOM_Pama_Croaker_croaker.pdf)
- [xxx](https://eprints.cmfri.org.in/16358/1/MFIS%20252_2022_Subal%20Kumar%20Roul.pdf)
- gelambung laki jauh lebih mahaldari yang betina
Para nelayan di Riau, seperti Indragiri Hilir, belakangan ini ‘berburu’ mendapatkan ikan tirusan atau tirus karena harga yang selangit. Ikan dengan nama latin Otolithoides pama, termasuk famili sciaenidae, harga per ekor bisa mencapai puluhan juta rupiah.
Yang bernilai tinggi dari ikan tirusan adalah gelembung (limpanya). Pembeli atau pengepul biasa mengupah orang yang ahli lagi untuk membelah perut ikan ini.
Hasil pencatatan BPPMHKP Pekanbaru, pengiriman gelembung ikan sepanjang 2019-2023 mencapai 1.204 kali atau 36.895 kilogram. Sumbernya dari enam daerah penghasil ikan di
1. Tembilahan,
2. Bengkalis,
3. Dumai,
4. Selat Panjang,
5. Pekanbaru dan
6. Panipahan.
Setidaknya ada enam pengirim utama mendominasi dalam perdagangan gelembung ikan di Riau.
Data ini tidak spesifik menyebut jenis ikan penghasil gelembung renang itu. Selain tirusan, gelembung yang biasa diperdagangkan juga produk turunan dari ikan malong (Muraenesox cinereus).
# [Ikan Malong (Muraenesox cinereus)](https://indiabiodiversity.org/species/show/232787)
Malong ( Muraenesox cinereus )adalah spesies ikan Sidat dalam keluarga pike conger, Muraenesocidae .
Mereka terutama hidup di dasar lunak di perairan laut dan air payau hingga kedalaman 800 m (2.600 ft), tapi bisa masuk ke air tawar.
# [Gamat Hitam- Teripang hitam ](https://www.mitrausahatani.com/teripang-berhasil-dibudidayakan/)
- [teripang](https://youtu.be/3O4dGg5DJc4?si=gpO6H6sVmOFNFKmP)
- [Teripang Hatchery video](https://www.youtube.com/watch?feature=shared&v=iG1IX73R1D4)
- [Seacuucumber Processing](https://youtu.be/hkuZCiMJy1s?si=U7Xo-IzJ5vAngoRn)
- [Seacucumber investment](https://www.youtube.com/watch?v=u5MmzsAoXOk)
- [start business seacucumber](https://youtu.be/_Qa1R2EEBCg?si=hB4PWzQhXBMunqJA)
- [Brackish shrimp culture](http://www.agritech.tnau.ac.in/fishery/fish_cul_brackish_shrimps_stock.html)
Market trends
---
The dried air bladders called fish maws are exported mainly to
* China and Singapore for the manufacture of isinglass, which is used in beverage and cosmetic
industry as well as Chinese traditional medicines (Dutta et al., 2014). The lesser and medium sciaenids are mostly
sold in fresh condition at the local markets or iced and transported to distant interior markets of Odisha, West
- [x] Write the press release
- [ ] Update the website
- [ ] Contact the media
# [Tilapia](https://youtu.be/7SOVLYYgyCE?si=Z3zplqT-GU7pJFfF)
# [Catfish](https://www.youtube.com/watch?v=YoI2QocTmlQ)
# Oyster
Sea cucumbers, prized for their commercial value, benefit from diets containing microalgae such as Chaetoceros and Isochrysis,
which enhance growth and survival rates. Similarly, for sea urchins and seahorses, microalgae like Isochrysis and Chaetoceros are
https://o2tree.github.io/image/1e9f2371-9b22-45b5-ac31-7c265bb21894.jpegrecommended for larvae, promoting survival, growth, and metamorphosis, especially the black-lip pearl oyster (Pinctada margaritifera) [165, 166].