Snail/Slug/I dunno/Hmm... Need I.D.

[bobbyblank]

Need an idea on these guys. Girlfriend came across them aquascapeing her pico tank. Had the tank for a month or so, but we never seen these two so they might be nocturnal. Small flat shells, very think and sleek. They are also the fastest snails i ever seen, I MEAN FAST!!!
Got some good pics and a side shot of the shell to make an easy ID. Thanks for the help...

 

[tinysuperbug]

Stomatella varia.

Great little grazers, mostly nocturnal. Has the ability to detach the rearward part of it's foot like a lizard, which will then wriggle around and distract it's predator while it uses it's speed to escape.

 

[Reefer_Addickt]

Great, exactly the thread I was looking for. I found one of these on a piece of coral I bought, and he got in my main tank. Was kind of worried long term what it might do.

 

[danch]

The worst they do is reproduce