Technical essentials of seed production and reproduction of Oreochromis tilapia

1、Selection of breeding pool
(2) area and water depth: The breeding pond area is generally 0.5-2 acres. 2, cleaning of breeding pools

After clearing the pond, add 1-1.5 meters of new water into the pond 5-7 days before stocking the broodstock. 1, broodstock selection
Nile tilapia-- has a body color of yellow-brown, with nine vertical black stripes on the side of the body. The terminal edges of the dorsal and caudal fins are black. There are obvious black vertical stripes on the caudal fin 9-10. The pelvic and anal fins are gray. Third, we must choose individuals that grow quickly, are large, strong, and have no injuries or diseases. Generally, the individual weight of female Nile tilapia is required to be 150 grams or more, in order to The difference between male and female tilapia is mainly based on their abdominal reproductive pores. 3, stocking time
4, male and female matching group
Depending on the size of the female, 1-2 can be placed per square meter.
The feeding amount is generally 3-5% of the total weight of the fish in the pond. After feeding, the fish will eat it quickly. You can increase the feeding amount appropriately, otherwise feed less or stop feeding. At this time, the male fish often lures the sexually mature female fish into the nest to mate. Soon the female fish will lay eggs, and the male fish will immediately ejaculate. After the eggs are fertilized, the female fish will immediately suck the eggs into her mouth and hatch them. The total mantissa=The number of cups and the mantissa of each cup.