''Ilyophis arx'' is an

eel Eels are 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 ...

in the family

Synaphobranchidae Cutthroat eels are a family, Synaphobranchidae, of eels, the only members of the suborder Synaphobranchoidei. They are found worldwide in temperate and tropical seas. Cutthroat eels range from in length. They are bottom-dwelling fish, found in ...

(cutthroat eels).''Ilyophis arx''
at www.fishbase.org. It was described by Catherine H. Robins in 1976.Robins, C. H., and C. R. Robins, 1976 (15 Apr.) ef. 3784''New genera and species of dysommine and synaphobranchine eels (Synaphobranchidae) with an analysis of the Dysomminae.'' Proceedings of the Academy of Natural Sciences of Philadelphia v. 127: 249-280. It is a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

, deep water-dwelling eel which is known from the eastern Pacific and northeastern

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

. It dwells at a depth range of . Males can reach a maximum

total length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish ...

of .

References

Synaphobranchidae Fish described in 1976 {{Anguilliformes-stub