Gnathophis is a genus of marine congrid eels.
Ariosoma ophidiophthalmus is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 1991. It is a tropical, marine eel which is known from the Say de Malha Bank in the western Indian Ocean. It is known to dwell at a depth range of 110–115 metres.
Ariosoma sazonovi is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 2004. It is a marine, deep water-dwelling eel which is known from the Philippines, in the western Pacific Ocean. It is known to dwell at a depth range of 160–440 metres. Females can reach a maximum total length of 39.5 centimetres.
Acromycter longipectoralis is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 2004. It is a marine, deep water-dwelling eel which is known from New Caledonia, in the western Pacific Ocean. It is known to dwell at a depth of 580 metres. Females can reach a total length of 21.7 centimetres.
Gnathophis andriashevi is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 1990. 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 36.5 cm.
Gnathophis asanoi is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 2004. It is a marine, deep water-dwelling eel which is known from the Philippines, in the western Pacific Ocean. It dwells at a depth range of 280–440 metres. Males can reach a maximum total length of 35 cm.
Gnathophis bathytopos, the blackgut conger, is an eel in the family Congridae. It was described by David G. Smith and Robert H. Kanazawa in 1977. It is a marine, deep water-dwelling eel which is known from the Straits of Florida, USA, and the southeastern Gulf of Mexico, in the western Atlantic Ocean. It dwells at a depth range of 180–370 meters. Males can reach a maximum total length of 35 cm.
Gnathophis capensis, the Southern Atlantic conger or southern conger, is an eel in the family Congridae. It was described by Johann Jakob Kaup in 1856, originally under the genus Leptocephalus. It is a subtropical, marine eel which is known from the southeastern Atlantic Ocean, including from False Bay to Plettenberg Bay, South Africa and also on Tristan da Cunha Island. It is known to dwell at a depth of 100 metres. Males can reach a maximum total length of 37 cm.
Gnathophis castlei, or Castle's conger, is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya and John Richard Paxton in 2000. It is a marine, deep water-dwelling eel which is known from Queensland, Australia, in the western central Pacific Ocean. It dwells at a depth range of 131–366 metres. Males can reach a total length of 34.2 centimetres.
Gnathophis cinctus, the hardtail conger or Catalina conger, is an eel in the family Congridae. It was described by Samuel Garman in 1899, originally under the genus Atopichthys. It is a tropical, marine eel which is known from the eastern central and southeastern Pacific Ocean, including Chile, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Peru, and the United States. It dwells at a depth range of 9–336 metres, and leads a benthic lifestyle, burrowing into loose sand. Males can reach a maximum total length of 42 cm.
Gnathophis grahami, or Graham's conger, is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya and John Richard Paxton in 2000. It is a subtropical, marine eel which is known from New South Wales, Australia, in the southwestern Pacific Ocean. It dwells at a depth range of 50–350 metres.
Gnathophis heterolinea is an eel in the family Congridae. It was described by Adolf Kotthaus in 1968, originally under the genus Lemkea. It is a tropical, marine eel which is known from Mombasa, Kenya, in the western Indian Ocean. It dwells at a depth range of 177–243 metres.
Gnathophis longicauda, the little conger, little conger eel or silver conger, is an eel in the family Congridae. It was described by Edward Pierson Ramsay and James Douglas Ogilby in 1888, originally under the genus Congromuraena. It is a marine, temperate water-dwelling eel which is endemic to Australia, in the Indo-West Pacific. It dwells at a depth range of 2–99 metres, and inhabits the continental shelf and slope.
Gnathophis macroporis, the largepore conger, is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya and John Richard Paxton in 2000. It is a marine, temperate water-dwelling eel which is known from Victoria, Australia, in the eastern Indian Ocean. It is known to dwell at a depth of 164 metres.
Gnathophis melanocoelus is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya and John Richard Paxton in 2000. It is a subtropical, marine eel which is known from western Australia, in the eastern Indian Ocean. It is known to dwell at a depth of 156 metres.
Gnathophis mystax, the thinlip conger or blacktailed conger, is an eel in the family Congridae. It was described by François Étienne Delaroche in 1809, originally under the genus Muraena. It is a subtropical, marine eel which is known from the eastern Atlantic Ocean, including southern Portugal, the Mediterranean, and Morocco. It dwells at a depth range of 75–800 metres, and inhabits mud and sand on the continental slope. Males can reach a maximum total length of 60 centimetres, but more commonly reach a TL of 35 centimetres.
Gnathophis nasutus is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya and John Richard Paxton in 2000. It is a tropical, marine eel which is known from western Australia, in the eastern Indian Ocean. It dwells at a depth range of 80–140 metres.
Gnathophis neocaledoniensis is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 2004. It is a marine, deep water-dwelling eel which is known from New Caledonia, in the western Pacific Ocean. It dwells at a depth range of 520–580 metres. Males can reach a maximum total length of 18.5 centimetres.
Gnathophis parini is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 1990. It is a marine, deep water-dwelling eel which is known from the Sala y Gomez Ridge, in the southeastern Pacific Ocean. It dwells at a depth range of 540–560 metres. The maximum known total length, based on a juvenile specimen, is 13.7 centimetres.
Gnathophis smithi is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 1990. It is a subtropical, marine eel which is known from the Nazca and Sala y Gómez ridges, in the southeastern Pacific Ocean. It dwells at a depth range of 145–250 metres, and leads a nocturnal lifestyle. Males can reach a maximum total length of 41.1 centimetres. The eel's diet includes benthic crustaceans and polychaetes.
