Acanthocotylidae is a family of

monogenea Monogeneans are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they have both male and female reprod ...

n fish skin parasites.

References

* North American monogenetic trematodes. II. The families Monocotylidae, Microbothriidae, Acanthocotylidae and Udonellidae (Capsaloidea). EW Price - Journal of the Washington Academy of Sciences, 1938 * Myxinidocotyle gen. n. and Lophocotyle Braun (Platyhelminthes, Monogenea, Acanthocotylidae) with descriptions of three new species from hagfishes (Chordata ...G MALMBERG, BO FERNHOLM - Zoologica Scripta, 1989
''Acanthocotylidae''
at WoRMS Gyrodactylidea Platyhelminthes families {{Monogenea-stub