bristlemouth noun2 •A member of Gonostomatidae, a family of deep-water marine fish.Predators of the bristlemouth turn out to include dragon fish and fangtooths, denizens of the abyss with daggerlike teeth. — 2015 •A member of one of several of the species of oceanic ray-finned fish in genera Argyripnus or Maurolicus in the family Sternoptychidae. formsbristlemouths
