Eustomias Vaillant, 1884

Koeda, Keita & Ho, Hsuan-Ching, 2019, Review of the genus Eustomias (Stomiiformes: Stomiidae: Melanostomiinae) of Taiwan, with descriptions of three new species, Zootaxa 4702 (1), pp. 94-106 : 95

Genus Eustomias Vaillant, 1884

Type species: Eustomias (Eustomias) obscurus Vaillant, 1884

Distinguishing characters. Body strongly elongated; dorsal and ventral outlines almost straight at abdomen, and gradually becoming shallow at tail. Body and head slightly compressed laterally. Head small, snout moderately pointed. Eye moderately large, circular. Mouth large, weakly oblique, posterior margin of maxilla extending posterior margin of eye. Single row of large and well-separated caniniform teeth on jaws. Body and head uniformly black. Postorbital photophore and body photophores white; fin rays transparent, basally blackish. Coloration changed to blackish brown to dark brown after preservation.