The extinct Yangtze sturgeon was found in Tuanfeng County, Hubei Province. How much do you know about this species?

We know a lot about this species. It is an omnivorous fish, mainly distributed in the middle and upper reaches of the Yangtze River, and is a national first-class protected animal. The Yangtze sturgeon is generally about 1m in length and 5kg- 10k g in weight. This kind of fish is unique to the Yangtze River in China, with a history of 65.438+0.5 billion years. At present, there are very few fish in the Yangtze River in China, which is listed as one of the top ten endangered aquatic animals by the World Wildlife Fund. On the evening of July 265.438+0, 2022, IUCN released an update report on the global total red list, announcing the wild extinction of the Yangtze sturgeon.

The Yangtze sturgeon was found in Tuanfeng County, Hubei Province. Later, according to the investigation, this discovery was released artificially. Whether there are Yangtze sturgeons in the wild remains to be investigated. In recent ten years, due to the construction of dams, water pollution and other factors, the wild Chinese sturgeon is extremely endangered. Although the country has taken a series of protective measures, it has not reached the expected standards. Since 1984, 62 large-scale release operations of Chinese sturgeon have been carried out continuously. The purpose is to release Chinese sturgeon to nature through this artificial propagation.

At present, China has completely mastered the captive technology of the Yangtze sturgeon, and even conducts a release activity every year, but the situation of the Yangtze sturgeon is still not optimistic. Although many larvae are discharged every year, there is still no record of spawning in the wild, which shows that this kind of fish has not established a relatively stable population in the wild. Restoring the natural spawning habitat of Yangtze sturgeon is not a simple matter. This place is an important economic development zone in China, and our human development may affect their spawning. This matter has a long way to go.