Ramshorn shells are not too hard for a puffer. Trumpet snails have a much harder shell, IMHO. I'm looking at picking up a schoutedeni in the next few weeks. Already have all the live food it'll ever need, since we have a fahaka already. Will be nice having a community puffer that stays fairly small.What snails do you guys feed your Congo puffers? I've read that ramshorn snails shells are too hard and can actually damage their teeth.