A search for a fish lost to extinction led to a brand-new species hiding in a South African river.

Whether it's redfin pickerel in the Kennebec River or sturgeon in the Great Lakes, nearly one-third of freshwater fish ...

Scientists used AI to analyze 10,631 freshwater fish species and found that stable, connected rivers are critical for ...

A dozen fish pulled from a South African river sparked years of debate before being confirmed as a new species.

As the Atlantic warms, many fish along the east coast of North America have moved northward to keep within their preferred temperature range. Black sea bass, for instance, have shifted hundreds of ...

A fish previously declared extinct has been released back into the wild in Australia. The olive perchlet, a small oval-shaped fish with large eyes, was considered extinct in Victoria, Australia, in ...

The ivory-billed woodpecker, along with 22 other species of birds, fish, mussels and other wildlife, is set to be declared extinct and removed from the endangered species list, US wildlife officials ...

It's a fish story with a big, unexpected plot twist. A native Great Lakes whitefish thought extinct for nearly 40 years has been rediscovered by scientists – in the wrong Great Lake. The Shortnose ...

A new study finds thousands of imperiled plants and animals meet Endangered Species Act criteria yet remain unlisted.

The rare fish was last spotted in Victoria, Australia in 1929 North Central CMA A fish previously declared extinct has been released back into the wild in Australia. The olive perchlet, a small ...