Letharchus aliculatus is an eel in the family Ophichthidae (worm/snake eels).Letharchus aliculatus at www.fishbase.org. It was described by John E. McCosker in 1974.McCosker, J. E., 1974 (18 Oct.) [ref. 2933] A revision of the ophichthid eel genus Letharchus. Copeia 1974 (no. 3): 619-629. It is a marine, tropical eel which is known from Brazil in the southwestern Atlantic Ocean. It is known to dwell at a depth range of , and inhabit sand sediments and rock tides. Males can reach a maximum total length of .

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