1. Pond treatment: water level 1.5-2m, less silt at the bottom, sufficient water and high dissolved oxygen. Disinfect the fertilizer water with quicklime and organic fertilizer before stocking. 2. Stocking: Every year in the middle and late April, when the water temperature reaches above 65,438+08℃, 65,438+0,000-65,438+0,500 species of California bass are stocked in each acre of pond in summer. 3. Feeding: At the initial stage of feeding, the daily feeding amount is about 8- 10% of the fish weight, and it is adjusted to about 3-5% as the bass grows up.

First, how to breed bass?

1, pond treatment

(1) The pond area should be 2-3 mu, and the water level depth should be about 1.5-2m.

(2) The pond requires less silt at the bottom, sufficient water, fresh water and high dissolved oxygen.

(3) Before stocking fish, clean the pond with 75- 100kg of quicklime per mu for disinfection.

(4) After disinfection, apply organic fertilizer150-250kg fertilizer water to each mu of pond.

2. stockings

(1) In the middle and late April every year, when the water temperature reaches 18℃, it will be released.

(2) Stocking 1 0,000-10,500 California bass fingerlings (about 4-5cm in length) in each mu of pond, with basically the same requirements to avoid cannibalism of the same species.

(3) In addition to stocking perch varieties, a small amount of silver carp, bighead carp and carp can also be stocked to help stabilize and improve water quality.

Step 3 feed

(1) At the initial stage of feeding, fresh bait (such as domestic fry, fish paste, water earthworm and red worm) was mainly fed, and the daily feeding amount was 8- 10% of the bass weight, and it was fed three times in the morning, middle and evening.

(2) With the growth of perch, the feeding amount should be increased, and at the same time, fresh animal feed (such as fresh miscellaneous fish, snail meat and internal organs of livestock) or artificial compound feed should be added. The daily feeding amount is about 3-5% of the bass weight, and it is fed twice at 8:30-9:00 am and 4:00-5:00 pm.

Step 4 manage

(1) patrol the pond in the morning and evening. When the pond is short of oxygen, turn on the aerator in time to increase oxygen, and ensure that the dissolved oxygen in the pond water is above 5mg/L. ..

(2) After feeding for two months, the perch was raised in different ponds to improve the survival rate and yield.

(3) The transparency of water body is kept at about 20-30cm.

2. Is perch cultured in seawater or fresh water?

1. There are relatively many kinds of sea bass, including sea bass (sea bass) and freshwater bass (California bass).

2. Sea bass is mainly produced in the Sea of Japan, the Yellow Sea and the Bohai Sea in Asia, and likes to live at the junction of salt and fresh water in the estuary. In China, the main producing areas are Qingdao, Shidao, Qinhuangdao and Zhoushan Islands.

3. Songjiang perch is mainly distributed in the south of Japanese Gulf, the west coast of Korean Peninsula, the northeast coast of China and the downstream of corresponding rivers. After fattening in fresh water every year, it migrates to the estuary or offshore around 165438+ 10.

4. The big mouth perch (California perch) originated from Mississippi River system in California, USA, and has been popularized to all parts of the country, which is an important freshwater fish culture species in China.

5. Perch is mainly distributed in Europe and Siberia, while in China, it is only distributed in the Irtysh and Ulungu rivers in Xinjiang.