From the Remo flounder to the anglerfish to the suckerfish, dorsal fin modifications provide insight into how fish evolve to ...

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The long structures seen in manta rays and their relatives function as an early warning system, rather than a defensive ...

What is a betta fish? Betta fish—also known as ... Betta splendens are known for their stunning colors, decorative fins, and tendency to fight. These characteristics are much more pronounced ...

and their large, wing-like pectoral fins get them airborne. Flying fish are thought to have evolved this remarkable gliding ability to escape predators, of which they have many. Their pursuers ...

these fishes' paired lobe fins are supported by the same basic bones as your arms and legs. Coelacanths even move their paired fins much like land animals move their limbs: the right pectoral fin ...

Fins: Help a fish move ... live on the seafloor. Other fishes are snake-like, such as the eel, enabling them to move easily between rocks. Other fishes have their own unique shapes.

These upright fish have a dorsal fin that flutters 30 to 70 times per second to provide forward propulsion ... As they are weak swimmers, seahorses ambush their prey rather than pursuing it. They use ...