How to Grade and Sort Catfish for Higher Market Prices
Table of Contents
1. Why Grade & Sort Catfish?
Grading and sorting catfish into uniform sizes increases your market value. Buyers pay more for consistent fish sizes than mixed batches. It also helps reduce feed competition and improves growth.
2. When & How Often to Grade
- Grade fingerlings early to reduce size variation.
- Final grading should be done before harvest to separate premium sizes.
- Avoid grading when water temperature is too high or fish are stressed.
3. Preparation Before Grading
- Stop feeding 24 hours before grading to reduce stress and water pollution.
- Check fish health and only grade strong fish.
- Ensure oxygen levels are high and the grading area is shaded.
4. Equipment & Methods for Grading
Common methods include:
- Bar Graders: Separate fish by allowing smaller ones to pass through.
- Grading Nets or Baskets: Use different mesh sizes for size sorting.
- In-Pond Sock/Live Cars: Sort directly during harvest.
5. Step-by-Step Grading Process
- Crowd fish gently into a small area.
- Pass fish through graders or nets.
- Allow smaller fish to pass through, keeping larger ones back.
- Repeat the process for more uniform sizes.
6. Post-Grading Handling & Care
- Keep fish in oxygenated water.
- Reduce handling and holding time.
- Transport carefully with good oxygen management.
7. Using Grades to Maximize Sale Price
- Sell large, uniform fish as premium at higher prices.
- Bundle smaller grades for secondary markets.
- Know what your buyers expect and grade accordingly.
8. Conclusion & Best Practices
Grading catfish properly helps you sell at premium prices, reduce feed waste, and manage your ponds effectively. Align your grading strategy with buyer needs and maintain good handling practices.
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