I've got these snails reproducing in my 125 and I have no idea what they are. I remember getting a handful of them from David before he got out and they've been thriving ever since. I thought about making a "please ID" post, but can anyone help me find out what they are? They have the physical characterisics of Nasaurius snails, but they are only ever on the glass. They stay small, lay eggs on the glass quite often. I don't ever see the babies until they are 1/2 the size of an eraser head. Anyways, here's a crappy pic of them, if you have any clues as to what they are, let me know!

They're like ninjas!
