Microcotyle helotes is a species of monogenean, parasitic on the gills of a marine fish.

[3] This monogenean was redescribed and illustrated by Dillon & Hargis (1985) based on 2 adults and one 1 juvenile from the type-host and locality.

[4][5] Williams (1991) noted that examination of a large series of specimens from both hosts showed them to be identical.

[5] Microcotyle helotes has the general morphology of all species of Microcotyle, with a symmetrical elongated body of medium size, comprising an anterior part which contains most organs and a posterior part called the haptor.

[1][4][5] It was redescribed from others Terapontidae; Pelsartia humeralis,[5] and the sea trumpeter Terapon theraps.