Pomacea is a genus of freshwater snails with gills and an operculum, aquatic gastropod mollusks in the family Ampullariidae, the apple snails. The genus is native to the Americas; most species in this genus are restricted to South America. in the aquarium trade these snails are sometimes called Pomacea or incorrectly Ampullarius, and in English as "[color] mystery snail" or "apple snail".