Climate change is rapidly altering freshwater ecosystems — raising temperatures, altering flood pulses and oxygen levels — and driving complex, region-specific changes in how fish grow, migrate and ...

New research has found that roughly half of Australia's freshwater fish are fond of snacking on animal and plant material, ...

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 ...

New study finds some of the oldest animals in the world living in a place you wouldn't expect: fishes in the Arizona desert. A recent study found some of the oldest animals in the world living in a ...

The world has seven continents, but do you know the largest freshwater fish in each? These creatures show the incredible diversity of Earth's inland waters. Let's get amazed as we look at these ...

An artist's reconstruction of the Weberian apparatus in a 67 million-year-old fossil fish. The Weberian structure (gold-colored bones at center) arose from a rib (shown in gray attached to several ...

A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is ...

Fish rank as the most diverse group of vertebrates in the world. Scientists recognize over 37,000 distinct species, with many more waiting to be discovered. Most fish fall into the ray-finned group of ...

More than 90% of popular freshwater fish in Southern California are carrying human-infecting parasites, researchers say. This poses a significant danger for those who like to eat freshly caught ...