Ariosoma major is an eel in the family Congridae. It was described by Hirotoshi Asano in 1958, originally as a subspecies of Alloconger shiroanago, which was later moved under the genus Ariosoma. It is a marine, temperate water-dwelling eel which is known from the eastern China Sea, Japan, and Taiwan, in the northwestern Pacific Ocean. It has a widespread distribution, and inhabits sandy regions. Males can reach a maximum total length of 53 centimetres.
Ariosoma meeki is an eel in the family Congridae. It was described by David Starr Jordan and John Otterbein Snyder in 1900, originally under the genus Congrellus. It is a subtropical, marine eel which is known from Japan and the Peng-hu Islands, in the northwestern Pacific Ocean. Males are known to reach a maximum total length of 53 centimetres.
Ariosoma shiroanago is an eel in the family Congridae. It was described by Hirotoshi Asano in 1958, originally under the genus Alloconger. It is a marine, temperate water-dwelling eel which is known from the northwestern Pacific Ocean, including Japan, South Korea, and Taiwan. It leads a benthic lifestyle and inhabits rough sand on continental shelves. Males can reach a maximum total length of 40 centimetres.
Acromycter nezumi is an eel in the family Congridae. It was described by Hirotoshi Asano in 1958, originally under the genus Promyllantor. 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 40 centimetres.
The Blackedge conger is an eel in the family Congridae. It was described by David Starr Jordan and John Otterbein Snyder in 1901, originally under the genus Leptocephalus. It is a marine, deep water-dwelling eel which is known from Japan to the Philippines, in the western Pacific Ocean. It dwells at a depth range of 150–450 metres. Males can reach a maximum total length of 54 centimetres.
Conger erebennus is an eel in the family Congridae. It was described by David Starr Jordan and John Otterbein Snyder in 1901, originally under the genus Leptocephalus. It is a marine, temperate water-dwelling eel which is known from Japan and the Korean Peninsula, in the northwestern Pacific Ocean. It is also called the "anaconda" アナコンダ in Tokyo, Japan.
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 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 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 heterognathos is an eel in the family Congridae. It was described by Pieter Bleeker in 1858, originally under the genus Myrophis. It is a marine, temperate water-dwelling eel which is known from the western Pacific Ocean, including the southwestern Japanese Archipelago, the Philippines, and the South China Sea. It dwells at a depth range of 183–199 metres. Males can reach a maximum total length of 41.5 centimetres.
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 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 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 sivicolus is an eel in the family Congridae. It was described by Kiyomatsu Matsubara and Akira Ochiai in 1951, originally under the genus Arisoma. It is a marine, deep water-dwelling eel which is known from Japan, in the northwestern Pacific Ocean. It dwells at a depth range of 300–535 metres. Males can reach a maximum total length of 57 centimetres.
The bignose conger is an eel in the family Congridae. It was described by David Starr Jordan and Charles Harvey Bollman in 1890. 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, and Peru. It dwells at a depth range of 25–90 metres. Males can reach a maximum total length of 40 centimetres, but more commonly reach a TL of 30 cm.
Cynoponticus coniceps, the red pike conger or conehead eel, is an eel in the family Muraenesocidae. It was described by David Starr Jordan and Charles Henry Gilbert in 1882, originally under the genus Muraenesox. It is a marine, tropical eel which is known from the eastern central and southeastern Pacific Ocean, including Mexico, Ecuador, Colombia, Costa Rica, Guatemala, El Salvador, Honduras, Panama, Peru, and Nicaragua. It dwells at a depth range of 10 to 100 metres, and inhabits sediments of sand and mud. Males can reach a maximum total length of 202 centimetres (80 in); the maximum recorded weight is 11.0 kilograms (24.3 lb).
The blacktail buckbill eel, also known commonly as the blacktail duckbill, or the duckbill eel in Malaysia, is an eel in the family Nettastomatidae. It was described by David Starr Jordan and John Otterbein Snyder in 1901, originally under the genus Chlopsis. It is a marine, tropical eel which is known from the western Pacific Ocean, including Japan, China, Malaysia, the Philippines, and Taiwan. It is known to dwell at a depth range of 100 to 500 meters. Males can reach a maximum total length of 50 centimeters (20 in).
Scolecenchelys aoki, the Misaki worm eel or Japan earthworm conger, is an eel in the family Ophichthidae. It was described by David Starr Jordan and John Otterbein Snyder in 1901, originally under the genus Muraenichthys. It is a marine, temperate water-dwelling eel which is known from reefs in Japan, in the northwestern Pacific Ocean. Males can reach a maximum total length of 44.8 centimetres (17.6 in).
The yellow snake eel is an eel in the family Ophichthidae. It was described by David Starr Jordan and Charles Henry Gilbert in 1882. It is a marine, subtropical eel known from the eastern central and southeastern Pacific Ocean, including Chile, Costa Rica, Colombia, Ecuador, Guatemala, El Salvador, Honduras, Nicaragua, Mexico, Panama, Peru, and the United States. It dwells at a depth range of 1 to 110 m, and forms burrows in rocky and sandy regions. Males can reach a maximum total length of 98 cm (39 in), but more commonly reach a length of 50 cm (20 in).
