Dorsal, anal, and caudal fins are single. Mouths ... while others are more snout-like and suck in food. Bodies: The shape of a fish's body depends on the fish's habits. For example, the body ...

A tuna-shaped robot takes advantage of the real ... Fish at West Chester University in Pennsylvania. But Fish adds that the caudal fin may play a larger role than the dorsal fin in the tuna ...

This fish amazes scientists from around ... Its entire body is powered by a powerful caudal fin, which, combined with a streamlined shape, makes the Pacific sailfish a living underwater rocket.