July 21 - The International Union for Conservation of Nature (IUCN) updated its Red List of threatened Species this evening. According to the directory,The Yangtze River unique species white sturgeon has been extinct, the Yangtze sturgeon wild extinction, worldwide, naked sturgeon Danube population extinction.The Red List also raised the status of seven other sturgeon species.
We have learned,Paddlefish of Yangtze River has “ King of Freshwater Fish in China & RDquo; Say,Paddlefish are huge, up to seven or eight meters long. The paddlefish is one of the few ancient fish to survive from the Cretaceous period of the Mesozoic era, 150 million years ago.
In 1989, the paddlefish was listed as the national first-class protected wild animal, in 1996 by the International Union for Conservation of Nature (IUCN) listed as & LDquo; Critically endangered level & throughout; , was identified as &LDquo when reassessed in 2009; Critically endangered (possibly extinct) & RDquo; .
The three Asian sturgeon species included the paddlefish, the Yangtze sturgeon and the Siberian sturgeon, among which the first two are representative aquatic species in the Yangtze Basin, China's mother river:Paddlefish was last found in the Nanxi section of yibin in 2003.
Globally, the main threats to sturgeon include illegal fishing from the illegal trade in wild caviar and fish, DAMS that block migration routes, unsustainable sand mining that damages their spawning grounds, and habitat loss, according to the report. “