The mottled eel, also known as the African mottled eel, the Indian longfin eel, the Indian mottled eel, the long-finned eel or the river eel, is a demersal, catadromous eel in the family Anguillidae. It was described by John McClelland in 1844. It is a tropical, freshwater eel which is known from East Africa, Bangladesh, Andaman Islands, Mozambique, Malawi, Sri Lanka, Sumatra, and Indonesia and recently from Madagascar. The eels spend most of their lives in freshwater at a depth range of 3–10 metres, but migrate to the Indian Ocean to breed. Males can reach a maximum total length of 121 centimetres and a maximum weight of 7,000 grams. The eels feed primarily off of benthic crustaceans, mollusks, finfish and worms.
The Pacific worm eel is an eel in the family Ophichthidae. It was described by David Starr Jordan and Charles Henry Gilbert in 1883. It is a marine, subtropical eel which is known from the eastern central and southeastern Pacific Ocean, including California, USA, Colombia, Costa Rica, El Salvador, Ecuador, Honduras, Mexico, Guatemala, Panama, Nicaragua, and Peru. It dwells at a depth range of 1 to 12 metres, and inhabits sand and mud sediments. Unlike many species of eel, it does not form burrows. Males can reach a maximum total length of 46 centimetres.
The Smallfin worm-eel is an eel in the family Ophichthidae. It was described by Charles Barkley Wade in 1946. It is a marine, tropical eel which is known from the eastern central and southeastern Pacific Ocean, including Nicaragua, Colombia, Panama and Costa Rica. It dwells at a depth range of 100 to 200 metres, and inhabits sediments of mud. Males can reach a maximum total length of 16 centimetres (6.3 in).
The Sooty sand-eel is an eel in the family Ophichthidae. It was described by Raymond Carroll Osburn and John Treadwell Nichols in 1916. It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Costa Rica and Mexico. It is known to dwell at a maximum depth of 20 metres (66 ft), and inhabits sand sediments. Males can reach a maximum total length of 77 centimetres (30 in).
The Panama sand-eel is an eel in the family Ophichthidae. It was described by Seth Eugene Meek and Samuel Frederick Hildebrand in 1923. It is a marine, tropical eel which is known from the eastern central Atlantic Ocean, including the Gulf of California, Mexico, Costa Rica, Panama, and Nicaragua. It dwells at a maximum depth of 30 metres (98 ft), and inhabits sandy sediments, sometimes in estuaries and mangroves. Males can reach a maximum total length of 76 centimetres (30 in).
Callechelys cliffi, the sandy ridgefin eel, is an eel in the family Ophichthidae. It was described by James Erwin Böhlke and John Carmon Briggs in 1954. It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Mexico and Panama. It dwells at a depth range of 0 to 30 metres, and inhabits sand sediments. Males can reach a maximum standard length of 45.5 centimetres (17.9 in).
Callechelys eristigma, the spotted ridgefin eel, is an eel in the family Ophichthidae. It was described by John E. McCosker and Richard Heinrich Rosenblatt in 1972. It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Costa Rica, Mexico, and Panama. It dwells at a depth range of 5 to 25 metres, and inhabits benthic sediments of rock and sand. Males can reach a maximum standard length of 113 centimetres (44 in).
The smiling snake eel is an eel in the family Ophichthidae. It was described by David Starr Jordan and Charles Henry Gilbert in 1882, originally under the genus Apterichthys. It is a marine, tropical eel which is known from the eastern central and southeastern Pacific Ocean, including Colombia, Costa Rica, Panama, Ecuador, and Mexico. It dwells at a maximum depth of 30 metres (98 ft), and inhabits sediments of sand. Males can reach a maximum total length of 41 centimetres (16 in).
The Sailfin eel is an eel in the family Ophichthidae. It was described by Raymond Carroll Osburn and John Treadwell Nichols in 1916, originally under the genus Letharchus. It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Costa Rica, Mexico, and Panama. It is known to dwell at a depth of 35 metres (115 ft), and inhabits rock and sand sediments. Males can reach a maximum total length of 81 centimetres (32 in).
The Clarion snake eel is an eel in the family Ophichthidae. It was described by David Starr Jordan and Ernest Alexander McGregor in 1898. It is a tropical, marine eel which is known from Mexico, in the eastern central Pacific Ocean. It inhabits shallow waters - at a maximum depth of 20 metres - and is found around rocks and sand. Males can reach a maximum total length of 49.4 centimetres.
The spotted snake eel, also known as the tiger snake eel or the spotted tiger snake eel, is an eel in the family Ophichthidae. It was described by Charles Frédéric Girard in 1859. It is a marine, tropical eel which is known from the eastern central and southeastern Pacific Ocean, including Chile, Costa Rica, Colombia, El Salvador, Ecuador, Mexico, Guatemala, Nicaragua, Panama, Honduras, and Peru. It dwells at a depth range of 0 to 60 metres, and inhabits benthic sediments of mud and sand. Males can reach a maximum total length of 74 centimetres (29 in), but more commonly reach a TL of 60 centimetres (24 in).
The death-banded snake eel is an eel in the family Ophichthidae. It was described by Samuel Garman in 1899. It is a tropical, marine eel which is known from the eastern central and southeastern Pacific Ocean, including the central Gulf of California, Colombia, Costa Rica, Mexico and Panama. It dwells at a depth range of 35–760 metres, and forms burrows in sandy and muddy bottoms. Males can reach a maximum total length of 86 centimetres.
Ophichthus longipenis, known commonly as the slender snake eel in Mexico, is an eel in the family Ophichthidae. It was described by John E. McCosker and Richard Heinrich Rosenblatt in 1998. It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Mexico, El Salvador, Guatemala, Honduras, Nicaragua, Costa Rica and Panama. It dwells at a depth range of 0 to 69 metres, and inhabits sand sediments. Males can reach a maximum total length of 58.7 centimetres (23.1 in).
The punctuated snake eel is an eel in the family Ophichthidae. It was described by Achille Valenciennes in 1837, originally under the genus Ophisurus. It is a marine, subtropical eel which is known from the eastern central and southeastern Pacific Ocean, including Nicaragua, Chile, Colombia, Costa Rica, Ecuador, Peru, and Panama. It dwells at a depth range of 15 to 277 metres, and inhabits sand and mud sediments. Males can reach a maximum total length of 85 centimetres (33 in), but more commonly reach a TL of 60 centimetres (24 in).
The wrinkled snake eel is an eel in the family Ophichthidae. It was described by David Starr Jordan and Charles Harvey Bollman in 1890. It is a marine, tropical eel which is known from the eastern central and southeastern Pacific Ocean, including the Galapagos Islands and the Cocos Islands. It is also speculated to occur in Malpelo Island. It is known to dwell at a depth of 200 metres (660 ft), and inhabits sediments of sand and rubble. Males can reach a maximum total length of 68 centimetres (27 in).
The Pacific snake eel is an eel in the family Ophichthidae. It was described by Johann Jakob Kaup in 1856, originally under the genus Muraenopsis. It is a marine, subtropical eel which is known from the eastern central and southeastern Pacific Ocean, including California, USA, Peru, the Gulf of California, Mexico, the Galapagos Islands, Colombia, Ecuador, Costa Rica, El Salvador, Honduras, Guatemala, Nicaragua, and Panama. It dwells at a maximum depth of 155 metres (509 ft), and forms burrows in mud and sand sediments. Males can reach a maximum total length of 115 centimetres (45 in), but more commonly reach a TL of 80 centimetres (31 in).
The rice-paddy eel is an eel in the family Ophichthidae. It was described by Francis Buchanan-Hamilton in 1822, originally in the genus Ophisurus. It is a tropical, marine eel which is known from the Indo-West Pacific, including Somalia, Tanzania, South Africa, southern India, Sri Lanka, Indonesia, Polynesia, Australia, Bangladesh, Cambodia, Kenya, Madagascar, the Philippines, Malaysia, Mozambique, Seychelles, Saudi Arabia, Taiwan, China, Thailand, Vietnam, and southern Yemen. It is an anadromous species and spawns in freshwater, often in rice paddies during the rainy season, earning it its common name. It also spends time in lagoons, estuaries and coastal rivers, in which it lives in burrows in the river bottom and bank. Males can reach a maximum total length (TL) of 100 centimetres, but more commonly reach a TL of 70 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 Galapagos snake eel is an eel in the family Ophichthidae. It was described by David Starr Jordan and Charles Harvey Bollman in 1890. It is a marine, tropical eel which is known from the eastern central and southeastern Pacific Ocean, including Colombia, the Gulf of California, Costa Rica, and the Galapagos Islands in Ecuador. It dwells at a depth range of 3 to 30 metres, and inhabits reefs, preferring to live in areas bearing a mixture of boulders, gravel and sand. Males can reach a maximum total length of 71 centimetres (28 in).
The smallfish snake eel is an eel in the family Ophichthidae. It was described by Charles Henry Gilbert in 1890. It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Mexico, Nicaragua, Panama, the Gulf of California and Costa Rica. It dwells in shallow waters at a maximum depth of 20 metres (66 ft), and inhabits sand and rock sediments. Males can reach a maximum total length of 70 centimetres (28 in).
