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Longneck eel

From Wikipedia, the free encyclopedia

Longneck eels
Narrownecked oceanic eel,Derichthys serpentinus,from plate 49 ofOceanic Ichthyologyby G. Brown Goode and Tarleton H. Bean, published 1896
Scientific classificationEdit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Anguilliformes
Suborder: Congroidei
Family: Derichthyidae
Genera

Derichthys
Nessorhamphus

Longneck eelsorneck eelsare a family,Derichthyidae,ofeels.They arepelagic fishes,found in the middle and depths of most oceans. The name comes fromGreekderesmeaning "neck" andichthysmeaning "fish".

They are distinguished by the presence of a series stripes on the head that form part of the sensory system, but otherwise the two genera of the family are quite different in appearance.Derichthyshas a narrow neck and large eyes, whileNessorhamphus'has a long, flattened, snout.[1]They grow to about 60 cm (24 in) in length.

Species

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The three species in two genera are:[2]

In some classifications (for example,Systema Naturae2000), this family is split in two, with Derichthyidae containing only the genusDerichthys,andNessorhamphusbeing assigned its own family, Nessorhamphidae.

References

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  1. ^McClosker, John F. (1998). Paxton, J.R.; Eschmeyer, W.N. (eds.).Encyclopedia of Fishes.San Diego: Academic Press. p. 89.ISBN0-12-547665-5.
  2. ^Froese, Rainer, and Daniel Pauly, eds. (2011)."Derichthyidae"inFishBase.January 2011 version.