The peculiar living habits of sturgeons

There are 25 species of sturgeons in the world, concentrated in the northern hemisphere. There are 8 species of sturgeons living in rivers and coastal areas of my country, of which 3 species are distributed in Xinjiang, 2 species in Heilongjiang, 2 species in the Yangtze River, and 1 species from the Yangtze River to the Pearl River. rivers and coasts.

Sturgeons are kept as ornamental fish because of their peculiar body shape. The sturgeon has a plow-shaped head, a lower mouth, a crooked tail, and 5 rows of bony plates on the back of the body. Both its juveniles and adult fish have ornamental value. Among them, Acipenser schrenckii (distributed in Heilongjiang) has been artificially bred as an ornamental fish since its artificial breeding was successful.

Sturgeons have strict requirements on water quality. They like to live in flowing water, high dissolved oxygen content, low water temperature and gravel bottom. The sexual maturity age of Chinese sturgeon is later. The male fish is 11 years old and weighs 50-100 kilograms. The female fish is 14 years old and weighs 160-250 kilograms. The male fish is 9-10 years old and the female fish is over 10 years old. On the other hand, Dachshund's sturgeon matures sexually earlier. Female fish weighing about 10 kilograms and male fish weighing 5 kilograms have reached sexual maturity. Sturgeons feed on benthic invertebrates and small fish.

animal tags：