''Xenomystax trucidans'' 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

Congridae The Congridae are the family of conger and garden eels. Congers are valuable and often large food fishes, while garden eels live in colonies, all protruding from the sea floor after the manner of plants in a garden (thus the name). The family i ...

(conger/garden eels).''Xenomystax trucidans''
at www.fishbase.org. It was described by

Alfred William Alcock Alfred William Alcock (23 June 1859 in Bombay – 24 March 1933 in Belvedere, Kent) was a British physician, naturalist, and carcinologist. Early life and education Alcock was the son of a sea-captain, John Alcock in Bombay, India who re ...

in 1894.Alcock, A. W., 1894

ef. 90 EF or ef may refer to: Arts and entertainment * Ef (band), a post-rock band from Sweden * '' Ef: A Fairy Tale of the Two.'', a Japanese adult visual novel series by Minori, or its anime adaptations Businesses and organizations * Eagle Forum, an ...

''Natural history notes from H. M. Indian marine survey steamer `Investigator,'... Series II., No. 11. An account of a recent collection of bathybial fishes from the Bay of Bengal and from the Laccadive Sea.'' Journal of the Asiatic Society of Bengal v. 63 (pt 2): 115-137, Pls. 6-7. 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

Maldives The Maldives, officially the Republic of Maldives,, ) and historically known as the Maldive Islands, is a country and archipelagic state in South Asia in the Indian Ocean. The Maldives is southwest of Sri Lanka and India, about from the A ...

and

Laccadives Lakshadweep () is a union territory of India. It is an archipelago of 36 islands divided into three island subgroups: the Laccadive Islands in the middle with the Amindivi Islands in the north separated roughly by the 11th parallel north and ...

, in the western

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by ...

. It is known to dwell at a depth of , but is more commonly found at a depth range of .''Xenomystax trucidans''
at the

IUCN redlist The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biolog ...

. 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 . Due to the limited number of specimens from which the species is known, the

currently lists ''X. trucidans'' as Data Deficient.

References

Congridae Fish described in 1894 {{Congridae-stub