The slingjaw wrasse, Epibulus insidiator, is a species of wrasse with an astounding jaw. Its mouth can extend over half the length of the fish's body. The fish can protrude its jaws longer than ...

Xiphactinus was one of the largest bony fish of the Late Cretaceous and is ... seabirds were snared inside Xiphactinus's upturned jaw, which was lined with giant, fanglike teeth, giving it an ...

Gulper eels are found deep underwater with little known information about them. Watch this video of a gulper eel ballooning ...

If there are two dorsal fins, the one nearest the head is called ... Some mouths extend directly from the head of the fish; in others the lower jaw extends beyond the upper jaw.

At first glance, the world’s second largest fish might seem menacing: Its gaping mouth has six rows of teeth in its upper jaw, and nine rows ... are totally harmless. One of only three filter ...