Chinese Paddlefish Declared Extinct(phys.org)
phys.org
Chinese Paddlefish Declared Extinct
https://phys.org/news/2020-01-chinese-paddlefish-declared-extinct.html
1 comments
"Things became difficult for them when the Gezhouba Dam was built in 1981—it split the paddlefish population in two and prevented those fish trapped below it from spawning"