Young fish mainly feed on plankton, and when they grow up, they can eat snails, mussels, shrimps and aquatic insects. Artificial feeding needs to prepare special feed, which can be mixed with hay powder, silkworm chrysalis, vegetable cake and barley according to the ratio of 4:3: 1:2. If you want to match other fish, you can use fish meal, bean cake, rapeseed cake, wheat bran, barley and corn as feed, and add a lot of crude protein to promote fish growth.

How to improve the survival rate of herring fry after entering the pool?

1. Fish are generally not fed on the same day, so as to adapt to the environment of the culture pond, and they are fed on the next day.

2. When the fry enter Tangqian, the pond must be cleaned, impurities removed, accompanying water and safety test water. It is best to test the water before sowing to make sure that the toxicity of drugs in the pond is gone and the fry can adapt to the new environment before sowing.

3. Pay attention to the dissolved oxygen status of the water body when throwing seedlings, and turn on the aeration equipment in time.

4. To prevent temperature difference stress, in order to avoid excessive stress reaction of fry, it is required that the temperature difference between the water temperature in the fry bag and the water in the pond should not exceed 2℃, and fry can be put in the pond for half an hour.

5. When planting seedlings, put the seedlings in the windward open place to avoid the fish being blown to the shore and the place where the seedlings are planted is not open, and the fish can't be scattered at once, resulting in hypoxia due to crowding.

6. The fry are damaged during transportation. After long-distance transportation, the fish's physique is weak, the body's anti-stress ability is reduced, and it is easy to be infected with pathogenic microorganisms. Therefore, disinfection and anti-stress treatment should be done well to improve the survival rate of fry.

7. Prevent natural enemies of fry. A few days before the fry are put into the pond, it is best to pull the net first to make sure that the pests in the aquaculture water have been completely removed before putting the fry.

8. Put the same batch and specifications in a pool to avoid the adverse effects of the differences in size and specifications on individual feeding and growth.

9. Eat less and eat more meals within 30 days after feeding the fry, and feed them evenly along the edge of the pond as far as possible to ensure that the fry eat evenly and have enough bait.