Chaudhuriidae, is a family of small freshwater eel-like fish related to the swamp eels and spiny eels, commonly known as the earthworm eels. The known species are literally the size and shape of earthworms, thus the family name. While one species, Chaudhuria caudata was reported from the Inle Lake by Nelson Annandale in 1918, the others have been only recently reported, all in the eastern Asia area, from India to Korea.
Moray eels, or Muraenidae, are a family of eels whose members are found worldwide. There are approximately 200 species in 15 genera which are almost exclusively marine, but several species are regularly seen in brackish water, and a few are found in fresh water.
Greeneyes are deep-sea aulopiform marine fishes in the small family Chlorophthalmidae. Thought to have a circumglobal distribution in tropical and temperate waters, the family contains just 18 species in two genera. The family name Chlorophthalmidae derives from the Greek words chloros meaning "green" and ophthalmos meaning "eye".
Ophichthidae is a family of fish in the order Anguilliformes, commonly known as the snake eels. The term "Ophichthidae" comes from Greek ophis ("serpent") and ichthys ("fish"). Snake eels are also burrowing eels, they are named for their physical appearance, they have long, cylindrical snakelike bodies. This family is found worldwide in tropical to warm temperate waters. They inhabit a wide range of habitats, from coastal shallows and even rivers, to depths of above 800 m (2,600 ft). Most species are bottom dwellers, hiding in mud or sand to capture their prey of crustaceans and small fish, but some are pelagic.
The cusk-eel family, Ophidiidae, is a group of marine bony fishes in the order Ophidiiformes. The scientific name is from the Greek ophis meaning "snake", and refers to their eel-like appearance. True eels, however, diverged from other ray-finned fish during the Jurassic, while cusk-eels are part of the Percomorpha clade, along with tuna, perch, seahorses, and others. Unlike true eels of the order Anguilliformes, cusk-eels have ventral fins that are developed into a forked barbel-like organ below the mouth. In the true eels by contrast, the ventral fins are never well-developed and usually missing entirely.
Sawtooth eels are a family, Serrivomeridae, of eels found in temperate and tropical seas worldwide.
Longneck eels or neck eels are a family, Derichthyidae, of eels. They are pelagic fishes, found in the middle and depths of most oceans. The name comes from Greek deres meaning "neck" and ichthys meaning "fish".
The duckbill eels or witch eels are a family, Nettastomatidae, of eels. The name is from Greek netta meaning "duck" and stoma meaning "mouth".
Macrognathus is a genus of eel-like fish of the family Mastacembelidae of the order Synbranchiformes.
Lucifuga is a genus of viviparous brotulas. Most of the species are native to caves and sinkholes in Cuba and the Bahamas; L. inopinata from deep water off the Galápagos Islands is the only exception. The four species rated by the IUCN are all considered vulnerable. The largest species in the genus reaches about 15 cm (5.9 in) in length.
Myroconger is the only genus of eels, the thin eels, in the family Myrocongridae. Very little is known about the group.
An eel is any ray-finned fish belonging to the order Anguilliformes, which consists of four suborders, 20 families, 111 genera, and about 800 species. Eels undergo considerable development from the early larval stage to the eventual adult stage, and most are predators.
The Garo spineless eel, Garo khajuriai, is a species of earthworm eel endemic to India. It belongs to the monotypic genus Garo. It is demersal and lives in fresh water
Ophidion is a genus of cusk-eels.
Otophidium is a genus of cusk-eels, part of the subfamily Ophidiinae in the family Ophidiidae. They are found in the western Atlantic and eastern Pacific.
Spectrunculus is a genus of cusk-eels found in the Atlantic and Pacific Oceans.
Bihunichthys monopteroides is a species of spineless eel native to Indonesia & Malaysia. This species grows to a length of 3.6 centimetres (1.4 in) SL. This species is the only known member of its genus.
Chaudhuria is a genus of spineless eels native to Southeast Asia.
Chendol is a small genus of spineless eels native to Southeast Asia.
Nagaichthys filipes is a species of spineless eel native to Indonesia and Malaysia. This species grows to a length of 3.1 centimetres (1.2 in) SL. This species is the only known member of its genus.
