Xenomystax trucidans is an eel in the family Congridae (conger/garden eels). at www.fishbase.org. It was described by Alfred William Alcock in 1894.Alcock, A. W., 1894 [ref. 90] 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, deep water-dwelling eel which is known from Maldives and Laccadives, in the western Indian Ocean. 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. Males can reach a maximum total length of .

Due to the limited number of specimens from which the species is known, the IUCN redlist currently lists X. trucidans as Data Deficient.

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