Thanks -- next time I see that snail (or others like it), it's history.
Interestingly, tiny pond snails get snapped up by my largest female zebra danio! I accidentally crushed one against the glass trying to get it out of the tank once and she snapped it up. Since then, I've seen her dislodge the littlest pond snails from the glass herself and eat them. I haven't seen a pond snail in weeks! I had no idea a danio would do that!