Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

While the common ancestor of vertebrates with synovial joints is still a mystery, the oldest specimen with evidence of these ...

Carnivores – Animals which eat meat. Salmon, pike and tuna are all types of carnivorous fish. Cold-blooded – Animals which become colder or hotter depending on the temperature around them.

In this activity, you will decide which type of fish—moray eels or bull ... What characteristics do all fishes have in common? What characteristics of a coelacanth cause it to be classified ...