Hi, though most people find snails to be pests, I love them, because they're tiny and I can add more life to the tank. Plus they are excellent for the ecosystem. Anyway I've got all sorts of pest snails, in controlled numbers of course, but the bladder snails never seem to live much.... I'm not sure if the other snails eat them or what.. I have the LFS give me like 10 at a time for free, then after a while I no longer see them. The other day I found a ramshorn attached to a bladder snail... Was he eating the other guy?? I havent found any information about that online... Maybe my betta has a taste for bladder snails?