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viperfish

[vahy-per-fish]
noun, plural (especially collectively) vi·per·fish, (especially referring to two or more kinds or species) vi·per·fish·es.
  1. any of several deep-sea fishes of the family Chauliodontidae, having a large mouth and fanglike teeth, some species having light-emitting organs on their bodies.
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Origin of viperfish

First recorded in 1890–95; viper + fish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018