Anglerfish A fierce-looking deep water fish. Anglerfish have a long thin dorsal fin with a light at its tip, called a lure. It hangs this in front of its mouth. When its prey lunges at the light, believing it to belong to another tiny animal, the anglerfish snaps it up. Some species of anglerfish have teeth that lie flat and then spring back around their prey when it is inside their mouths. Most species live at depths of around 500 metres (1600 feet).
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