A herring with a body length of 1 cm can usually grow to about 1-2 kg in a year, but the actual growth of herring depends on the specific situation because of the differences in the number and technology of breeding. Black herring is one of the "four big fish" in China. The first mature age of Yangtze River black herring is 3-6 years old, and the male fish will be 1-2 years earlier. After mature, the body length is about 9 mm and the weight is about 11 kg. After mature, the female fish is about 1 meter and weighs about 15 kg.

1. How long can a 1cm herring grow in a year

1. Generally, a 1 cm herring can grow to about 1-2 kg in a year, but the actual weight of herring may be different due to factors such as the number and technology of breeding.

2. The growth speed of herring is relatively fast, and the herring of 2-3 winter age can usually reach about 6-1 kg, while the common herring in the market generally weighs about 3-4 kg, which is relatively large.

3. Is herring in China? Four big fish? Chinese herring is one of the fastest growing species. The first mature age of Yangtze herring is 3-6 years old (mostly 4-5 years old). If it is a male fish, it will be 1-2 years earlier. When the male fish matures, the individual length is about 9 mm and weighs about 11 kg. When the female fish matures, the individual length is about 1 meter and weighs about 15 kg.

4. The growth rate of black herring in Hukou, Jiangxi Province is the fastest at the age of 1-4. When it reaches the age of 5-6, it gains an average of more than 3.7 kilograms per year, while the average annual gain of male fish is about 1 kilogram less than that of female fish.

second, how long is the breeding cycle of herring

1. The breeding cycle of herring

The breeding cycle of herring is generally 2-3 years. The fry released in the first year can grow to about 1 kg after one year's growth, 4 kg after two years, and 15 kg after three years, so it takes almost 2-3 years from the release of fry to the market.

2, herring culture method

(1) Choose healthy, energetic fry with the same size and no damage and disease as the stocking object. Before stocking, soak the fry in 4% salt solution for about 1 minutes to kill the bacteria on its body surface.

(2) The appropriate stocking quantity is to be able to see obvious gaps on the water surface. Usually, 2, fry with a size of 5 cm can be stocked in each acre of pond.

(3) During May-June, feed 4 times a day. During July-September, feed 3 times a day. After October, feed twice a day. Snails can be selected as fresh feed, and the feeding amount per mu is 4 kg. Other feeds can also be fed, such as mussels, insect larvae, corn, wheat bran and bean cakes.

(4) In the process of breeding, disinfection should be done well, and water quality should be maintained at ordinary times.