The African longfin eel, also known simply as the longfin eel, is an eel in the family Anguillidae. It was described by Wilhelm Peters in 1852, originally under the genus Muraena. It is a tropical eel known from freshwaters in southern Kenya, Cape Agulhas, Madagascar, and New Caledonia. The eels spend most of their lives in freshwaters far inland, but migrate to the Western Indian Ocean to breed. Males can reach a maximum total length of 150 centimetres; females can reach a maximum standard length of 120 centimetres and a maximum weight of 5,000 grams. The eels can live for about 20 years. Juveniles and adults are known to feed off of carcasses, crabs, and bony fish.
The Java spaghetti eel, also known as the Java thrush-eel, Java worm eel, and the black-tailed thrush eel is an eel in the family Moringuidae. It was described by Johann Jakob Kaup in 1856, originally under the genus Aphthalmichthys. It is a tropical, marine eel which is known from the Indo-Pacific, including East Africa, the Tuamoto Islands, the Ryukyu Islands, and Micronesia. It is a burrowing species which inhabits reefs at a depth range of 2–15 m. Males can reach a maximum total length of 120 cm.
Ariosoma megalops is an eel in the family Congridae. It was described by Henry Weed Fowler in 1938. It is a tropical, marine eel which is known from the western central Pacific Ocean. It is known to dwell at a maximum depth of 717 metres. Males can reach a maximum standard length of 14.9 centimetres.
Parabathymyrus fijiensis 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 Fiji, in the western Pacific Ocean. It dwells at a depth range of 478–500 metres. Females can reach a total length of 36 centimetres.
Parabathymyrus karrerae is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 1991. It is a marine, deep water-dwelling eel which is known from Cape Tala and Madagascar, in the western Indian Ocean. It dwells at a depth range of 260–405 metres.
Parabathymyrus macrophthalmus is an eel in the family Congridae. It was described by Toshiji Kamohara in 1938. It is a tropical, marine eel which is known from the Indo-West Pacific, including Japan, Taiwan, the South China Sea, and Indonesia. Males can reach a maximum total length of 47 centimetres.
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.
Bathycongrus bleekeri is an eel in the family Congridae. It was described by Henry Weed Fowler in 1934. It is a tropical, marine eel which is known from the Philippines, in the western central Pacific Ocean. It is known to dwell at a depth of 51 metres. Males can reach a maximum total length of 8 centimetres.
The Toothy conger is an eel in the family Congridae. It was described by Henry Weed Fowler in 1934, originally under the genus Uranoconger. It is a marine, deep water-dwelling eel which is known from the western Indian and southwestern Pacific Ocean, including the Philippines and Indonesia. It is known to dwell at a depth of 886 metres. Males can reach a maximum total length of 4.3 centimetres.
Bathyuroconger parvibranchialis is an eel in the family Congridae. It was described by Henry Weed Fowler in 1934, originally under the genus Silvesterina. It is a marine, deep water-dwelling eel which is known from the western central Pacific Ocean. It is known to dwell at a depth of 1023 metres.
Benthenchelys cartieri is an eel in the family Ophichthidae. It was described by Henry Weed Fowler in 1934. It is a tropical, marine eel known from the Philippines, in the western central Pacific Ocean. It is known to dwell at a maximum depth of 1168 m, and inhabits the pelagic zone.
Muraenichthys elerae is an eel in the family Ophichthidae. It was described by Henry Weed Fowler in 1934. It is a marine, tropical eel which is known from the Philippines, in the western central Pacific Ocean.
The Johnston snake eel is an eel in the family Ophichthidae. It was described by Leonard Peter Schultz and Loren Paul Woods in 1949. It is a marine, tropical eel which is known from the Indo-Pacific region, including the Chagos Islands, Hawaii, the Marquesan Islands, the Society Islands, Australia, and New Caledonia. It dwells at a depth range of 2–23 metres, and inhabits sand sediments in coral reefs. Males can reach a maximum total length of 35 centimetres.
The Fringe-lipped worm-eel is an eel in the family Ophichthidae. It was described by Henry Weed Fowler in 1934. It is a marine, tropical eel which is known from the western central Pacific Ocean, including Taratara Island, Samar Island, the Philippines, the Marshall Islands, Micronesia and Solomon Island. It dwells at a maximum depth of 48 metres (157 ft), and inhabits benthic sand sediments in coral reefs. Males can reach a maximum total length of 11.5 centimetres (4.5 in).
Scolecenchelys cookei is an eel in the family Ophichthidae. It was described by Henry Weed Fowler in 1928, originally under the genus Muraenichthys. It is a marine, temperate water-dwelling eel which is known from Hawaii, in the eastern central Pacific Ocean. It dwells at a depth range of 3 to 5 metres, and inhabits pockets of sand in coral reefs. Males can reach a maximum total length of 15.5 centimetres (6.1 in).
The goldspotted eel, also known as the goldspotted snake eel or the dark-spotted snake eel, is an eel in the family Ophichthidae. It was described by Charles Alexandre Lesueur in 1825, originally under the genus Muraenophis. It is a marine, tropical eel which is known from the western and eastern Atlantic Ocean, including Bermuda, southern Florida, USA; the Bahamas, Santa Catarina, and Brazil. It dwells at a maximum depth of 15 metres (49 ft), and inhabits rocky and coral reefs. Males can reach a maximum total length of 110 centimetres (3.6 ft).
The bluntnose snake-eel is an eel in the family Ophichthidae. The author of the species is anonymous, but it has been referred to Edward Turner Bennett in 1830. It is a tropical, marine eel which is known from the Indo-Pacific, including Kenya, Madagascar, South Africa, Taiwan, Thailand, and the Philippines. It dwells at a maximum depth of 22 m, but also frequents shores. Males can reach a maximum total length of 45 cm.
The Marble-toothed snake-eel is an eel in the family Ophichthidae. It was described by Charles Henry Gilbert in 1898. It is a marine, tropical eel which is known from the eastern central and southeastern Pacific Ocean, including Costa Rica, Colombia, Panama and Ecuador. It dwells in shallow waters at a maximum depth of 10 metres (33 ft), and inhabits sand and mud sediments and mangroves. Males can reach a maximum total length of 68 centimetres (27 in).
The Bean's sawtooth eel is an eel in the family Nemichthyidae. It was described by Theodore Gill and John Adam Ryder in 1883. It is a marine, deep water-dwelling eel which is known from throughout the Atlantic Ocean, the Indian Ocean, and the Western Pacific Ocean, including Iceland, South Africa, Réunion, and Australia. It dwells at a depth range of 0–5998 metres, and leads a solitary lifestyle. It migrates vertically at night. Males can reach a maximum total length of 78-80 centimetres, making it the largest sawtooth eel.
The Kaup's arrowtooth eel is an eel in the family Synaphobranchidae. It was described by James Yate Johnson in 1862. It is a marine, deep water-dwelling eel which is known from the Indo-Western Pacific and eastern and western Atlantic Ocean, including the Faroe Islands, Iceland, Cape Verde, the Western Sahara, Nigeria, Namibia, South Africa, Greenland, France, Saint Pierre and Miquelon, the United Kingdom, Ireland, the Philippines, Portugal, Spain, the Bahamas, Brazil, Canada, Cuba, Japan, Australia, Mauritania, Morocco, and Hawaii. It dwells at a depth range of 120 to 4,800 metres, most often between 400 to 2,200 metres, and inhabits the upper abyssal zone on the continental slope. It is intolerant of the temperatures of higher waters. Males can reach a maximum total length of 100 centimetres (39 in).
