. . "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\"."@en . . . . . . . .