Based on the living habits, feeding habits, and local water quality of yellow catfish and P. vannamei, the author explored a suitable polyculture model for ponds. The following points must be met for polyculture of yellow catfish in shrimp ponds:
1. Take reasonable stocking densities and stocking specifications. According to the facility conditions of the shrimp ponds and the biomass of the water bodies, scientifically determine the density and specifications of the polyculture stingrays. If the stocking density is too large or the specification is too small, the growth rate will be slow, and it will not reach the market specification at the end of the year, which will affect its sales.
2. The shrimp ponds of polyculture stingrays should not be stocked with other carnivorous fish or ground-dwelling fish with strong ability to catch food.
3. Feed the main shrimp feed first and then feed the stingray feed. Stingrays have a habit of nocturnal release and should be fed at night.
4. Maintain fresh water and adequate dissolved oxygen. In the growing season, timely measures such as water injection, water exchange, and water transfer should be taken.
5. Be careful with medication. Since stingrays are indifferent fishes, they are sensitive to many kinds of fishery drugs, and they should pay attention to the use of safe drugs. Generally, copper sulfate and organophosphorus pesticides are not used.
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