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.
The reason fish smell bad is partly chemical, partly psychological.
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!
Sorry BUGS, your brain isn't equipped for REM sleep, or any sleep for that matter.
I know that gorillas and chimpanzees can learn sign language and use it to communicate. But can other animals use sign language, too?
We've heard that there's been some success with fish ladders and elevators in places such as the Columbia River.