To raise high-quality fish, adhere to the four-fixed feeding method

Fixed quality means the feed given must be fresh and palatable, not rotten or spoiled, nutritious, and easily digested and absorbed by the fish. Grasses must be disinfected, manure must be fermented, and hard, coarse feed must be chopped or processed.

For the fixed quantity, the monthly feeding amount should be determined according to water temperature, fish growth and feed supply. The daily feeding amount depends on the season, water color, weather and the feeding situation of the fish, and is generally calculated at 2%-5% of the fish stock in the pond. It can also be determined according to how the fish eat; for example, if grass is fed at 8-9 a.m., it is best for it to be finished by 2-3 p.m.; when feeding concentrated feed, it is best for it to be finished within 1-2 hours. In weather such as rain, muggy heat or heavy fog, the feeding amount should be appropriately reduced. Throughout the year, the overall feeding principle is to "start feeding early, stop feeding late, focus on the middle and support both ends."

Fixed time means feeding must be carried out at set times. In southern regions, feed once daily at 8-9 a.m. and once at 3-4 p.m.; in the north it can be slightly delayed. Specifically, it should be appropriately adjusted according to changes in season, climate, feed type and number of feedings, but overall the principle of "eat less, feed more often" should be followed. Usually, when feeding concentrated feed, feed twice a day in early spring and late autumn, and 3 times a day, at most 4 times, during the peak growing season; if feeding twice a day, feed once at 8-9 a.m. and once at 3-4 p.m.; when different fish species are polycultured in the pond, green feed or coarse feed should be fed first, and after 1-2 hours, concentrated feed should then be fed, to avoid herbivorous fish competing for the concentrated feed.

For fixed location, green feed is generally placed in feeding frames made of bamboo poles or other floating materials, each feeding frame having an area of 6--12 sq m, triangular or quadrilateral in shape, and fixed with wooden stakes. Concentrated feed is placed on feeding frames made by tying reed or plastic woven mats to several bamboo poles, each feeding frame having an area of 2--3 sq m. The feeding frames should be set up in places convenient for management, facing the sun and with good water quality, that is, 0.5-1 m below the water surface near the shore, shallower in spring and autumn and deeper in summer.