Teleostei (teleosts) >
Stomiiformes (Lightfishes and dragonfishes) >
Stomiidae (Barbeled dragonfishes) > Malacosteinae
Etymology: Photostomias: Greek, photos = light + greek, stoma = mouth (Ref. 45335); tantillux: Name from Latin 'tantillus' for ‘so little’ or ‘so small’ and 'lux' for ‘light’, referring to the small size of the light-producing postorbital of this species..