All land vertebrates evolved from fish, and Acanthostega—the fossil of a part-fish, part-amphibious creature—pinpoints how we made the leap from water to earth.
Fish navigate through turbulence by slaloming between whirlpools of water.
Forget sharks, piranha should be the reason you're afraid to go near the water.
Sexy swordfish have figured out how to go a-courting without courting disaster.
The dusky dottyback is dressed to kill: It shape-shifts to look like its prey and goes in for the attack.
When frozen in water, fish remain in a state of suspended animation until spring melts the ice away.
Climate change isn't just bad for us land animals. It's bad for sea creatures as well.
The story of evolution is replete with twists and turns. The land-bound blenny fish is a prime example.
Some aquatic animals have a sixth sense that allows them to detect electrical fields in water.
Your pet fish's cognitive abilities will probably surprise you!