The U.S. Fish and Wildlife Service has reclassified 21 endangered species as extinct, saying the best scientific evidence shows that these species no longer exist. Seven of those species lived in ...

Several environmental groups are petitioning the federal government to add the Alabama shad to the U.S. Endangered Species List, saying the once-popular commercial fish has disappeared from 90% of its ...

First comprehensive assessment of the world’s freshwater fish species reveals that 25% are at risk of extinction. Climate change threatens a growing number of species, from freshwater fishes to ...

Aliza Chasan is a Digital Content Producer for "60 Minutes" and CBSNews.com. She has previously written for outlets including PIX11 News, The New York Daily News, Inside Edition and DNAinfo. Aliza ...

Freshwater fish populations that dwell nearer the poles are outperforming their equatorial counterparts, researchers have found. Freshwater fish populations that dwell nearer the poles are ...

“Brilliantly” colored fish caught in streams in Alabama have been identified as two new species — but they’re at the “highest risk of extinction,” researchers said. The new fish, the Gurley darter and ...