Scientists have discovered that most freshwater fish may have originated in ancient oceans, not rivers. Fossils and DNA now reveal a surprising evolutionary journey that reshapes biology.

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 ...

A small fossil reveals that the largest freshwater fish, Otophysans, emerged in the sea, not in rivers, changing the ...

Nearly a quarter of the world's freshwater species are at risk of extinction, according to new research. A detailed extinction assessment of more than 23,000 species of freshwater fauna by the ...

By Stefan Lovgren Southeast Asia’s Mekong River is one of the world’s most diverse and productive freshwater ecosystems, home ...

LONDON — Nearly a third of all freshwater fish species are threatened by extinction, according to a new report released by 16 conservation groups on Tuesday. " The World’s Forgotten Fishes" says that ...

Often unassuming and cloaked in dull shades of brown or gray, freshwater fish have long been overlooked when it comes to conservation. It’s come at a cost, with as many as a third of global ...

The human population shows no signs of being threatened, though the same can’t be said for our fellow animals. In particular, freshwater fish, which humans have used for food, sport and as pets for ...

Called the ‘King of the Aquarium’, these freshwater fish come in a variety of colours and patterns. These fish require warmer ...

Whether a caught fish is released back into the water or removed for consumption depends on more than just the fish species ...

Scientists discovered 212 freshwater fish species in 2021, according to a new report by the conservation organization Shoal. At a time when we hear so much about animals going extinct, the report is a ...

Scientists reveal Priocharax rex, a tiny Amazonian fish with a strange skin “wing” that redefines evolution in miniature.