"Extinct" means no longer existing, but the news (
https://3g.163.com/dy/article/GAVLG6910514TQ42.html) says "The Chinese Sturgeon Research Institute in Yichang, Hubei Province, is the only institution that continuously conducts the breeding and release of Chinese sturgeon.
Founded nearly 40 years ago, the Chinese Sturgeon Research Institute has made a series of advances in the artificial breeding of Chinese sturgeon.
The 2009 breakthrough in fully artificial breeding"