- any deep-sea fishes of the genera Argyropelicus, Sternoptyx, and related genera, of tropical and temperate waters, having a silvery, hatchet-shaped body.
- Also called flying characin. any of several freshwater fishes of the genera Carnegiella, Gasteropelecus, and Thorachocharax, occurring from Panama to the Rio de la Plata and capable of flying short distances by rapid movements of their large pectoral fins.
Origin of hatchetfish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018