[3] Microcotyle sebastisci was first described by Yamaguti in 1958, from mature specimens only, out of 41 specimens recovered from three Sebastidae Sebastiscus marmoratus, Sebastodes güntheri (currently Sebastes ventricosus) and Sebastichthys pachycephalus (currently Sebastes pachycephalus) and one Serranidae Epinephelus akaara .

[1][5] Mamaev, in his revision of the family Microcotylidae, considered Paramicrocotyle a junior subjective synonym of Microcotyle.

The reproductive organs include a reniform genital atrium, surrounded by radiating muscle fibers and covered inside with short spines except for the median anterodorsal areas, an oval to elliptical unarmed vagina opening middorsally at the anterior end, a single ovary in form of an interrogation mark, 8-20 testes that occupy the whole postovarian intercecal field.

[7] Yamaguti recorded the Hong Kong grouper Epinephelus akaara (Serranidae) as host of Microcotyle sebastisci.

[4] Microcotyle sebastisci was first described from fish from the Inland Sea and Sagami Bay (Japan).