The Pennsylvania Fish and Boat Commission has been busy stocking trout. Here's a look at how to know which species you caught ...

Due to pollution, climate change and overfishing, freshwater fish are thought to be the second most endangered vertebrates in ...

Wrasse fish use hard surfaces as tools to crack open prey. This behavior shows flexible thinking and environmental awareness.

Evolving roughly 27 different times in the long history of fish, bioluminescence—the biological production of light—is one of ...

In California, people that depend on dwindling salmon populations say they stand to lose everything if more water is diverted ...

Near a village in northeastern India, a “dwarf”-like creature with a “large” mouth swam through the river — or tried to, at ...

Discovered in the McGraths Flat fossil site in New South Wales, Australia, the new fossil is a freshwater smelt belonging to ...

Paleontologists have discovered a newly identified fish species in Australia so well-preserved that they could determine its last meal — dating back up to 16 million years to the Miocene Epoch.