This is because DHA in silver cod is not heat-resistant. Freshwater cod can spend the winter in the north. If you want to raise silver cod, it can spend the winter in the north, and it is resistant to hypoxia, which is very suitable for novice breeding. If you want to raise it in the south, you'd better let it live in a low temperature place.
China freshwater silver cod can grow 40 to 50 centimeters a year. Silver cod can grow to more than one meter at most. It is 40 to 50 centimeters long a year, and the adult fish is about 5 to 8 kilograms long. Silver cod, also known as naked fish and naked fish, belongs to cold-water benthic fish.