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Encyclopedic overview
Humpback anglerfish
Deep-sea fish are fish that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep-sea fishes include the flashlight fish, cookiecutter shark, bristlemouths, anglerfish, viperfish, and some species of eelpout.
Excerpted from Wikipedia’s “deep-sea fish” article, available under the CC BY-SA 4.0 licence.