Ten acres of reservoirs in Changde area can be considered to raise freshwater fish such as carp, crucian carp and grass carp with strong tolerance, good adaptability, fast growth and good meat quality. Among them, the market demand of carp is large, the price is relatively high, and the breeding is relatively simple, which is a relatively profitable choice. At the same time, pay attention to the sanitation and water quality of the culture environment to ensure the healthy growth of fish.