Melanoides nyassana

Melanoides nyassana is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Thiaridae.

It is endemic to Lake Malawi, where it is widespread.

Melania truncatelliformis Bourguignat, 1889 may be a synonym of Melanoides nyassana. The IUCN Red List of Threatened Species treats the species as a synonym of Melanoides polymorpha.