Hanging water fish refers to some fish that are raised in different ponds after they grow into adults. They don't feed feed, don't feed grass, don't feed fish medicine, just drink clear water and eat plankton, which makes the fish "slim down". It is characterized by low fat, high protein and no hormones. Hanging water fish is favored by consumers, and the market price reaches 19.8 yuan/kg. The benefit of cultivating hanging water fish is considerable, and 750 kg of hanging water fish can be harvested per mu. Grass carp, crucian carp, pomfret and Guizhou fish can all hang water fish. Hanging water fish can also be mixed with silver carp. Silver carp can eat the feces discharged by hanging water fish and receive 750 kilograms of silver carp per mu.