The large-eye snaggletooth (Borostomias antarcticus), also called the straightline dragonfish or Antarctic snaggletooth, is a species of fish in the family Stomiidae (barbeled dragonfishes).
The large-eye snaggletooth is black in colour, up to in length. It has 9âÂÂ13 dorsal soft rays and 12âÂÂ17 anal soft rays. It is identified by the lack of high arch in the photophores behind the anal base, presence of double postorbital organ and the clear separation of the dagger-like teeth in its upper jaw. It has 40âÂÂ60 lateral photophores extending along its belly and positioned in two straight lines. The genome of Borostomias antarcticus contains at least fifteen filovirus-like elements (nucleoprotein-like) of which nine have extended open reading frames.
The large-eye snaggletooth is bathydemersal and mesopelagic, staying below during the day, sometimes as deep as . It is found in oceans worldwide.
The large-eye snaggletooth feeds on mysids, bony fish and crustaceans.