1, water quality requirements: freshwater silver cod like cooler water, the optimal growth temperature of about 10 ℃ -15 ℃, the highest not more than 20 ℃. Freshwater silver cod is more demanding on the water quality, the acidity and alkalinity between PH6.5-7.5, the best control in 7.0 or so, the water is clear and turbidity-free, the dissolved oxygen is more than 6mg/L, and ammonia nitrogen is 0.02mg/L or less.
2, breeding density requirements: freshwater cod is a group of fish, but too high a breeding density will affect the growth and health of fish. In general, it is relatively suitable to accommodate about 20 freshwater cod per cubic meter of water.
3. Feed requirements. : Freshwater silver cod is carnivorous fish, meat and seafood is their main food, you can choose mixed feed or powdered feed. In the feed formula, the proportion of protein, fat and carbohydrates should be controlled, as well as adding the necessary vitamins and trace elements.