How to raise snapper

Snapper is the general name of many kinds of snapper, farmed snapper is generally black sea bream, so how to raise snapper?

I. preliminary preparation

It is necessary to select a suitable culture area according to the habits of snapper and carry out desilting and disinfection.

It is necessary to choose shrimp ponds with hard sediment, sand and gravel bottoms, and culture areas with good water quality, no pollution and good management, with an area of 10-30% mu, a water depth of more than 2 meters, a water exchange capacity of more than 30%, and no pollution sources around, and convenient transportation.

Drain the remaining water in January, close the gate to dry, from the end of February to the beginning of March, clear the silt in the culture area, the depth is about 10 cm, and then use bleach to disinfect the culture area completely, the dosage per mu is 25-30 kg.

2. Stocking fish fry

Prepare the basic bait for reproduction, and release fish fry, feed the basic bait in the early stage, increase the amount of food in the later stage, and feed miscellaneous fish and shrimp and other meat.

The variety and quantity of bait are rich, which will play a good role in the early growth of fish fry.

The fry was released to the pond at the beginning of April, the size of fry was about 70g / tail, and the amount of fry per mu was between 580 and 620. After releasing the fry, a small amount of bait was given on the third day, and the activity and survival rate of the fry were observed.

III. Other management

Water quality management and disease control are also needed during the growth period of sea bream.

Water quality management: at the initial stage of stocking fish fry, due to the small amount of bait and stable water quality, the water should be changed as little as possible. In the middle and later period, the water exchange increased with the increase of water temperature. In the later stage, due to the increase of feeding and the increase of metabolites, 7 kg of calcium peroxide water quality improver was used per mu to improve the water quality environment.

Disease prevention and control: in order to control the occurrence of fish disease, the following measures are mainly taken: first, to feed high-quality bait; second, to feed medicine bait regularly; third, to sprinkle 1 g / m 3 bleach each time.