Reef fish in different oceans often develop similar color patterns because evolution explores the same set of biological ...

A new fish species has been recorded in Nebraska after a fisherman reeled in the colorful creature. “We hear about new species in Nebraska from time to time, but most of them are unwanted, invasive ...

Kelsey James/NOAA Fisheries Gary Longo was looking for what he thought would be small genetic differences across a single species of small, ocean-dwelling fish: Pacific sardine. But as he examined the ...

More than 10,000 definitive anglers earned prestigious Fish Ohio pins, a recognition of trophy-sized catches, according to ...

Emperor cichlids, large fish native to Lake Tanganyika in Africa, don't like being stared at, especially if someone's gaze is directed at their offspring. Those are the findings of a new study ...

Introduced species can wreak havoc on native ecosystems. Many states are flooding their waterways with them.

The tiny Amazon molly (Poecilia formosa) has always fascinated researchers because, according to the rules of evolution, it shouldn't have survived as a species, let alone thrive as a species for over ...