Fish is packed with protein and heart-healthy omega-3 fats, making it a staple of healthy diets worldwide. But experts say ...

There is a long-standing tension between aquarium hobbyists and marine biologists over how to interpret fish behavior.

Betta splendens are known for their stunning colors, decorative fins, and tendency to fight. These characteristics are much ...

Fatty fish are the easiest way to get omega-3 fatty acids. But how often should you have fish in your meals? A dietitian ...

An unexpected haul of nearly 500 fossilized fish in Egypt provides an unprecedented picture of how sea life rebounded from ...

A surprising new discovery suggests that tiny microbes living inside fish may be helping shape the chemistry of the world’s ...

Scientists have peered inside the skull of a 380-million-year-old Antarctic fish that was closely related to the first animals to walk on land, revealing surprising clues about how life began its move ...