Researchers studying rockhead poachers from Deadman Bay think they may have solved the mystery of the fish's odd bowl-shaped head.

Biologist and underwater photographer Joseph Ricketts captured charming footage of the river chub, a small freshwater fish with big mating habits. When temperatures reach 65 degrees in spring, male ...

The spotted ratfish is a two-foot-long fish with a big head and a long, skinny tail that lives in the northeastern Pacific Ocean. It belongs to a group of fish called chimaeras that are closely ...