From the specific classification point of view, Chinese sturgeon belongs to the genus Acipenser in the order Acipenser, so they belong to the bony fish and also belong to the sturgeon, which is a kind of sturgeon and a more precious one among sturgeons.

The Chinese sturgeon is 0.4-1.3m long and weighs 50-300kg. The largest individual is 5 meters long and weighs 600 kilograms. It is the largest fish in the Yangtze River, so it is called the "Yangtze River Fish King".

The body is spindle-shaped, with a long tip and four whiskers in front of the mouth. The mouth is located on the ventral side, which is elastic and can be stretched into a tube. The body is covered with five large and hard bone scales, one on the back and two on the side and abdomen. The caudal fin is curved, the base of the lateral fin is broad, and the dorsal fin is opposite to the gluteal fin. The ventral fin is located in front of the dorsal fin, and there are spiny scales at the base of the fin and caudal fin.

Botanical history:

Acipenser sinensis all appeared in the Upper Cretaceous at the end of Mesozoic, about 65.438+0.4 billion years ago. China once found sturgeon fossils in the Late Jurassic strata of Beipiao, Liaoning Province (65.438+0.4 billion years ago), and named them Beipiao sturgeon. This sturgeon has only one line of lateral line scales on both sides, and the other body surfaces are bare, which is different from that of Chinese sturgeon with five lines of scales.

Sturgeon is one of the most endangered fish. 63% of the species are extremely endangered, the other three may be extinct, and the remaining 30% are threatened or endangered. Therefore, all the living sturgeons are listed in the red list.

Baidu encyclopedia-ACIPENSER sinensis