A strange, big-eyed "dragonfish" hidden under Antarctic ice for 780,000 years has finally been discovered - and it's already at risk.

Species numbers alone do not fully capture how ecosystems are changing. In a global study, scientists analyzed long-term data from nearly 15,000 marine and freshwater fish communities. They found that ...

Some deep-sea fish may be able to see light in a different way from most other vertebrates, according to a new study. The ...

That viral “zombie fish” isn’t alive. Science explains how reflexes and residual nerve energy can make dead fish appear to ...

Interspecies communication was once thought to be rare outside of humans and apes, but research has shown it occurs in a variety of animals, including birds, cetaceans, and even fish. Doing so ...

WASHINGTON— In a legal victory for the Center for Biological Diversity, the U.S. Fish and Wildlife Service has agreed to reevaluate Endangered Species Act protections for brook floaters. These ...

A new study finds thousands of imperiled plants and animals meet Endangered Species Act criteria yet remain unlisted.

Body shape had a clear influence on energetic demand. Deep-bodied fish, with their larger surface area, generate more resistance as water moves around them, making them naturally better at resisting ...

Can we finally retire the myth that goldfish have three-second memories? This oft-cited “fact” has been thoroughly debunked. Scientists have shown that fish can distinguish and remember individuals, ...