Chinese sturgeon is the highest among 27 species of sturgeon in the world. It is huge and powerful, with a length of over 4m and a weight of over1000kg.
Acipenser sinensis: The average body length is about 40 cm, the longest is 130 cm, and the maximum weight is 600 kg. 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. Sturgeon is a rare ancient fish left over from Mesozoic10.5 billion years ago. Between cartilage and hard bone, the degree of ossification of bone generally decreases. The central axis is an elastic notochord without ossification of vertebral body, and most of the cartilaginous shells along the skull are not ossified. 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, with spiny scales at the base of the fin and caudal fin, spiral valves in the intestine, anus and drainage holes close to the base of the ventral fin, and the opening of fallopian tube far from the ovary.
In summer and autumn, the Chinese sturgeon, who lives in the shallow water outside the Yangtze River estuary, swam back to the Yangtze River and returned to the Jinsha River to lay eggs and breed after fighting for more than 3,000 kilometers upstream. After giving birth, the young fish grow to about 15 cm and live with them in the open sea. In this way, they were born in the upper reaches of rivers and grew up in the sea for generations.
The life cycle of Chinese sturgeon is long, and the longest life span can reach 40 years. It is a national first-class protected wild animal and a living fossil, and is known as the "giant panda in the water". It has high scientific research, medicinal and ornamental value. China, Japan, Korea, Lao People's Democratic Republic and Korea.