11. ""'Lanistes alexandri " "'is a species of large freshwater snail, an operculum in the family Ampullariidae, the apple snails . 12. Unlike the pulmonate snail families, apple snails are not hermaphroditic, but gonochoristic; i . e . they have separate genders. 13. ""'Pomacea aldersoni " "'is a South American species of freshwater snail with gills and an family Ampullariidae, the apple snails . 14. ""'Asolene " "'is a genus of freshwater snails with an operculum, aquatic gastropod mollusks in the family Ampullariidae, the apple snails . 15. The American bullfrog and the leopard frog could displace native frogs, while the golden apple snail could displace the native kuhol. 16. These apple snails grow to be much larger than the true ramshorn snails, and they consume large amounts of plant matter. 17. ""'Saulea " "'is a genus of freshwater snails with an operculum, aquatic gastropod mollusks in the family Ampullariidae, the apple snails . 18. ""'Pomacea maculata " "'is a species of large freshwater snail with an aquatic gastropod mollusk in the family Ampullariidae, the apple snails . 19. As is the case in some other genera of apple snails , " Pomella " deposits eggs above the waterline in calcareous clutches. 20. ""'Pomacea " "'is a genus of freshwater snails with gills and an aquatic gastropod mollusks in the family Ampullariidae, the apple snails .
