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The superorder Elopomorpha contains a variety of types of fishes that range from typical silvery-colored species, such as the tarpons and ladyfishes of the Elopiformes and the bonefishes of the Albuliformes, to the long and slender, smooth-bodied eels of the Anguilliformes. The one characteristic uniting this group of fishes is they all have leptocephalus larvae, which are unique to the Elopomorpha. No other fishes have this type of larvae.
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".
Nettastomatidae, the duckbill eels or witch eels are a family of eels. The name is from Greek netta meaning "duck" and stoma meaning "mouth".
An eel is a ray-finned fish belonging to the order Anguilliformes, which consists of eight suborders, 19 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.
Hoplunnis is a genus of eels in the duckbill eel family Nettastomatidae. It currently contains the following species:
Nettenchelys bellottii is a species of duckbill eel in the family Nettastomatidae. It is found in the western Indian Ocean and the Red Sea. This species is only known from larvae.
Nettastoma is a genus of eels in the duckbill eel family Nettastomatidae.
Nettenchelys is a genus of eels in the duckbill eel family Nettastomatidae.
Saurenchelys is a genus of eels in the duckbill eel family Nettastomatidae.
Venefica is a genus of eels in the duckbill eel family Nettastomatidae. It currently contains the following species:
The Dana duckbill eel is an eel in the family Derichthyidae. It was described by Johannes Schmidt in 1931. It is a marine, deep water-dwelling eel which is known from throughout the Atlantic, Pacific, and Indian Ocean, including Australia, Brazil, Benin, Bangladesh, Cameroon, Cambodia, China, Ghana, Pakistan, Côte d'Ivoire, Guinea, India, Mozambique, Guinea-Bissau, Indonesia, Liberia, Malaysia, Kenya, Mauritania, Myanmar, Nigeria, Papua New Guinea, Senegal, Sierra Leone, the Philippines, Somalia, South Africa, Tanzania, Sri Lanka, Thailand, Togo, the Hawaiian Islands, USA; Yemen, and Vietnam. Males can reach a maximum total length of 30 centimetres.
The Duckbill oceanic eel is an eel in the family Derichthyidae. It was described by Johannes Schmidt in 1912. It is a marine, deep water-dwelling eel which is known from France, Morocco, the Cape of Good Hope, and South Africa in the eastern Atlantic Ocean, as well as from the western Atlantic, southwestern Indian, and southwestern Pacific. It dwells at a depth range of 0–1800 metres, inhabiting the mesopelagic zone. Males can reach a maximum total length of 58.9 centimetres.
The duck-billed eel also known as the shortsnouted sorcerer or the smallhead duckbill eel, is an eel in the family Nettastomatidae. It was described by Albert Günther in 1877. It is a marine, deep water-dwelling eel which is known from the Indo-Pacific and the southeastern Pacific Ocean, including Japan, Hawaii, eastern Australia, southeastern Africa, and Chile. It dwells at a depth range of 60–1190 metres, and inhabits the continental shelf and slope. Males can reach a maximum total length of 82 centimetres.
The solitary duckbill eel is an eel in the family Nettastomatidae. It was described by Peter H. J. Castle and David G. Smith in 1981. It is a marine, deep-water-dwelling eel which is known from the Indo-Western Pacific, including Kyushu-Palau Ridge, the Philippines, Australia, and the Hawaiian Islands. It is known to dwell at a depth range of 415 to 610 metres. Males can reach a maximum total length of 46.5 centimetres (18.3 in).
Nettastoma syntresis is an eel in the family Nettastomatidae. It was described by David G. Smith and James Erwin Böhlke in 1981. It is a marine, deep water-dwelling eel which is known from the western central Atlantic Ocean, including the Bahamas, Cuba, and the northeastern Gulf of Mexico. It dwells at a depth range of 0 to 641 metres. Males can reach a maximum standard length of 55 centimeters (22 in).
Nettenchelys exoria is an eel in the family Nettastomatidae. It was described by James Erwin Böhlke and David G. Smith in 1981. It is a marine, deep water-dwelling eel which is known from the western central Atlantic Ocean, including Florida, USA and the Bahamas. It dwells at a depth range of 277 to 494 meters. Males can reach a maximum total length of 46.7 centimeters (18.4 in).
The bridge duckbill eel is an eel in the family Nettastomatidae. It was described by Peter Henry John Castle and David G. Smith in 1981. It is a marine, deep water-dwelling eel which is known from the western Pacific Ocean, including New Caledonia, the Philippines, and Indonesia. It dwells at a depth range of 400–412 metres. Females can reach a maximum total length of 43.1 centimetres.
Nettenchelys inion is an eel in the family Nettastomatidae. It was described by David G. Smith and James Erwin Böhlke in 1981. It is a marine, deep water-dwelling eel which is known from a single specimen discovered in Florida, USA, in the western central Atlantic Ocean. It is known to dwell at a depth range of 458 to 531 meters. Males can reach a total length of 42.3 centimeters (16.7 in).
The pygmy pikeconger is an eel in the family Nettastomatidae. It was described by David G. Smith and James Erwin Böhlke in 1981. It is a marine, tropical eel which is known from the western central Atlantic Ocean, including Venezuela and the Gulf of Mexico, and possibly more locations. It is known to dwell at a depth range of 128 to 280 meters. Males can reach a maximum total length of 20.1 centimeters (7.9 in).
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).
References
- Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Nessorhamphus in FishBase . June 2011 version.
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