The Atlantic wolffish is another fish with fearsome teeth — four to six sharp fangs followed by three rows of crushing teeth. It even has saw-like teeth lining its throat! Why does it need so many teeth? Because it only eats crustaceans, sea urchins and hard-shelled molluscs. The Atlantic wolffish also has small eyes and a long, slender body like that of an eel that it moves from side to side, which is why it is also called the wolf eel.