Islamia trichoniana is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc or micromollusc in the family Hydrobiidae.

[1][2][3] I. trichoniana is endemic to Greece, where it is restricted to Lake Trichonida, an ancient, deep, oligotrophic lake[4] in the south Adriatic-Ionian region of the country.

[1] This species is currently classified by the IUCN as critically endangered and possibly extinct.

It is threatened by habitat destruction, as intensive agricultural practices in the neighbouring area lead to water pollution and eutrophication of the lake and the excessive abstraction of water for irrigation purposes causes a drop in water level.

This Hydrobiidae-related article is a stub.