Gnathophis is a genus of marine congrid eels.
Ariosoma coquettei is an eel in the family Congridae. It was described by David G. Smith and Robert H. Kanazawa in 1977. It is a tropical, marine eel which is known from the northern coast of South America, in the western central Atlantic Ocean. It is known to dwell at a maximum depth of 75 meters. Males can reach a maximum total length of 28.1 centimeters.
The flapnose conger is an eel in the family Congridae. It was described by David G. Smith and Robert H. Kanazawa in 1977. It is a tropical, marine eel which is known from French Guiana, in the western central Atlantic Ocean. It is known to dwell at a depth of 210 metres.
Paraconger guianensis is an eel in the family Congridae. It was described by Robert H. Kanazawa in 1961. It is a tropical, marine eel which is known from French Guiana and northern Brazil, in the western Atlantic Ocean. It is known to dwell at a depth of 73 metres.
The Bullish conger is an eel in the family Congridae. It was described by David G. Smith and Robert H. Kanazawa in 1977, originally under the genus Rhechias. It is a marine, deep water-dwelling eel which is known from the Gulf of Mexico to the Amazon, in the western Atlantic Ocean. It dwells at a depth range of 366–475 meters. Males can reach a maximum total length of 39.5 centimeters.
Bathycongrus polyporus is an eel in the family Congridae. It was described by David G. Smith and Robert H. Kanazawa in 1977, originally under the genus Rhechias. It is a marine, deep water-dwelling eel which is known from the Straits of Florida and the northern coast of Cuba, in the western central Atlantic Ocean. It dwells at a depth range of 439–549 meters. Males can reach a maximum total length of 43 centimeters.
Conger oligoporus is an eel in the family Congridae. It was described by Robert H. Kanazawa in 1958. It is a tropical, marine eel which is known from Hawaii and Guam, in the eastern central and western central Pacific Ocean. It dwells at a depth range of 2–507 metres, and leads a benthic lifestyle, inhabiting crevices of hard substrata. It feeds predominantly on finfish.
The manytooth conger, also known as the manytooth conger eel or simply the conger eel, is an eel in the family Congridae. It was described by Robert H. Kanazawa in 1958. It is a tropical, marine eel which is known from the western Atlantic Ocean, including the United States, Bermuda, the Antilles, the western Caribbean, and Brazil. It dwells at a depth range of 3–55 meters, and leads a benthic lifestyle, inhabiting rocky regions and coral reefs. Males can reach a maximum total length of 100 centimeters, but more commonly reach a TL of 80 cm.
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 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 microps, the smalleye 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 western Australia, in the eastern Indian Ocean. It dwells at a depth range of 200–320 metres.
Gnathophis musteliceps is an eel in the family Congridae. It was described by Alfred William Alcock in 1894, originally under the genus Congromuraena. It is a marine, deep water-dwelling eel which is known from the Bay of Bengal, in the western Indian Ocean. It dwells at a depth range of 265–457 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 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.
Gnathophis tritos 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, in the western central Atlantic Ocean. It dwells at a depth range of 458–567 meters.
Gnathophis xenica is an eel in the family Congridae. It was described by Kiyomatsu Matsubara and Akira Ochiai in 1951, originally as a subspecies of Arisoma nystromi. It is a marine, temperate water-dwelling eel which is known from Japan, in the northwestern Pacific Ocean. Males can reach a maximum total length of 32 centimeters.
Japonoconger caribbeus 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 only from the Caribbean Sea, in the western central Atlantic Ocean. It dwells at a depth range of 329–576 m (1,079–1,890 ft). Males can reach a maximum total length of 50.2 cm (19.8 in).
