These are the world’s longest-lived freshwater fish. Some reach 127 years old, a feat previously thought impossible for ...

In an Australian first, researchers have described a new species of 15-million-year-old fossilized freshwater fish, Ferruaspis brocksi, that shows preserved stomach contents as well as the pattern of ...

Roach fish that migrate between different lakes and water courses have larger pupils and better eyesight than roach fish that stay in one place. The adaptation makes it easier for the red-eyed ...

The Southeastern Michigan Aquarium Society held an auction Saturday, where hobbyists spent hours bidding on colorful fish to ...

“The discovery of the 15 million-year-old freshwater fish fossil offers us an unprecedented opportunity to understand ...

Climate change and invasive species will reduce habitat space for native fish and increase harmful interactions.

this species may have spent its entire life in freshwater, according to the study. “While this study is focused on one species of fish,” Frese said, “it is part of a broader ecosystem that ...

Australian scientists have discovered an ancient freshwater fish fossil with its stomach contents remarkably preserved. In a ...

NAIROBI ― A new killifish species, scientifically known as Nothobranchius sylvaticus, has been documented in seasonal swamps ...