Thiaridae

Thiaridae, common name thiarids or trumpet snails, is a family of tropical freshwater snails with an operculum, aquatic gastropod mollusks in the superfamily Cerithioidea.

==Taxonomy== Many species of freshwater snails that are characterized by a turreted shell were originally placed within the genus Melania Lamarck, 1799. This genus as delimited by authors of the late 19th and early 20th century contained hundreds of species, and was successively split into different groupings. Over time, infrageneric groups (subgenera) were elevated to the rank of independent genera and the genus Melania was elevated to the rank of a family, Melanidae.