Of all the snails I mentioned, only the brigs, nerites and assassins are plant friendly. The rest are voracious plant eaters. Read Donya Quick's article on Pomacea insularum found around the site. Insularums are the largest snails on record minus the Pomacea maculata whose existence has yet to be proven. Insularums leave bite marks so if I have these,I'm not touching them. They tend to be a little violent.