First, water selection and cage setting should pay attention to the selection of fresh water, no pollution, wide water surface, water level stability, transparency more than 60 cm, dissolved oxygen 5 mg / liter or more, water depth 3 meters or more, sheltered from the sun, perennial lake with micro-flowing water Pool or Kuwan set cages. The cage uses a single-layer polyethylene section mesh, and the mesh eyes should be less than 1.5 cm; a cage of 1-28 m2 should be made, preferably 451.8 m, 441.8 m, and 431.8; the cages should be open for use. The bamboo is made into a frame and doubles as a floater. The net frame with a diameter of 6.5 mm is used as the bottom frame and doubles as a sinker. The stones can also be suspended in the bottom corners of the cage to form the box. The upper mesh of the cage should be over 20 cm above the water surface. The cages are arranged in a "one" shape, with one squid cage and two bait fish cages, strung in a row, with a box unilateral length of one cage and a row spacing of 5 meters, set at a position perpendicular to the direction of flow. To facilitate the exchange of water in the tank. Second, fingerlings for fingerlings are preferred for fish stocks. They require healthy, disease-free and uniform specifications. Individual specifications should be greater than 3 cm, preferably 50-100 g/tail. In order to prevent fish species from stabbing each other, large-sized fish species should be stocked in winter; Stocking densities generally range from 10-35 per square metre. Put the fish fry in each square meter of water before soaking into the tank and soak for 10-15 minutes with 0.1 ml of worm or 10 g of potassium permanganate solution to kill parasites or bacteria on the fish. The baitfish are preferably low-value fish such as whitefish, squid, tilapia, and small junk fish, and are cultivated from summer flowers. Stocking densities range from 6000 to 8000 per square meter, and new fish feeds must be added at any time depending on feeding needs. It is better to feed in the early morning or early evening and require live fish as bait. The amount of feeding is about 20 times of the amount of carp. The specifications are about 50% of the body length of the carp, and the water temperature for feeding is generally 25°C or more. - Feed once a day for 3 days, 1 time for every 7 days at 20-25°C, 1 time for every 10-15 days at 10-20°C, and 1 time for every 20 days below 10°C. Third, the management of cages to raise catfish, fresh water, less incidence, in the breeding process are also susceptible to trichomonads, slugs, rickets, rotting disease, etc., therefore, cages and around to put water peanuts, water Gourds are used for squid inhabitation. In the high temperature season, strong chlorine and fish and insects are hung around the cage. In the onset of illness, the four corners of the cage can be suspended and a medicated bath treatment is used. Usually wash once every 10-15 days. And do a good job of preventing wind waves and squid breeding in time according to the individual's growth, in order to facilitate survival.
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