1, pond construction
According to the number of fry, it is best to build a pool of suitable size in reservoirs, lakes and other places. It is generally best to build a rectangular pool in the east-west direction. The depth of the pool is about 2.5, and the water depth is about 2 meters. Then put some silt on the bottom and enclose it with a protective net. Before stocking, 15 days, sprinkle 150 kg of quicklime into the pool for disinfection.
2. Fish stocking
Go to the specialty store to buy some healthy seedlings, then soak them in 3% ~ 5% salt solution 15 minutes or so, and finally put them in the pool. Generally, it is almost enough to stock 9000 ~ 10000 tails per mu.
3. Daily management
(1) Pay attention to the growth of fish: during the breeding period, pay attention to the pond, observe the feeding and activities of fish, and handle any abnormality in time.
(2) Water quality requirements: 4/5 of the pool water should be changed every other week in spring, with small change for 3 days and large change for 7 days in high temperature season to achieve good water quality.
(3) Feeding requirements: Try to feed some small fish, shrimps, larvae, etc. The initial feeding amount is 10% of the body weight, and it can be reduced to about 5% of the body weight in the future, and it should be fed spoon by spoon, so that the feed waste is less. Later, the feeding amount will be increased.
(4) Prevention of diseases: During the growth period of snakehead, diseases such as wheel disease, iodine bubble disease, hemorrhagic septicemia and skin rot will occur, so preventive measures should be taken in advance.