Gnathophis andriashevi is an eel in the family Congridae (conger/garden eels).Gnathophis andriashevi at www.fishbase.org. It was described by Emma Stanislavovna Karmovskaya in 1990.Karmovskaya, E. S., 1990 [ref. 20148] New species of conger eels (Congridae) from southeastern Pacific Seamounts. Voprosy Ikhtiologii v. 30 (no. 5): 764-772. It is a marine, deep water-dwelling eel which is known from the western part of the Sala y Gomez Ridge, in the southeastern Pacific Ocean. It dwells at a depth range of 260–330 metres. Females can reach a maximum total length of .

The species epithet "andriashevi" was given in honour of Anatoly Andriyashev's 80th birthday.

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