Britannica Sources used in this answer

Which river basin was home to the Chinese paddlefish?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Russian sturgeon (Acipenser gueldenstaedtii) — chondrostean Russian sturgeon (*Acipenser gueldenstaedtii*) swimming along the seafloor of the Black Sea.

The Chinese paddlefish (Psephurus gladius) was native to the Yangtze River basin in China.12

While some sources previously identified the species as critically endangered, it was officially declared extinct by ecologists in 2020, with the last confirmed sighting occurring in 2003.1