Generally, cages can be built in lakes, reservoirs, rivers and other waters, and the water depth is required to be greater than the height of cages.

2. Fenced fish

(1) In lakes, reservoirs and navigable rivers, one end of the net is inserted into the bottom of the water and connected with the stone dragon, while the other end is exposed out of the water, and the water area is divided into several pieces by piling.

(2) The water area requires a water depth of 2-3m, a water flow velocity of 0.05-0. 1m/s, a small water level drop, rich natural bait, flat bottom and moderate mud hardness.

3, running water fish farming

(1) The running water fish pond requires sufficient water, good water quality, stable water level, suitable water temperature (between 15-30℃ in May-65438+1October) and high dissolved oxygen.

(2) Fish ponds should be built where there are natural gaps and the water in the reservoir can be used, or next to mountain springs.

(3) The fish pond is round, oval or fan-shaped, the wall of the pond is made of bricks or stones, then the surface is polished with cement, and the bottom of the pond is leveled with concrete. Both the water inlet and the water outlet are built with slopes to guide the water flow to the bottom, and anti-escape facilities are installed at the water inlet and the water outlet.