Snail'ish thing ID

[EvilNick]

So my lfs gave me this little hitchhiker but even tho they said they knew what it was and it was safe they couldn't remember what it was called. It's fast, like real fast,if that helps.

Some kind of sea slug they said but it has a thin shell on its back. Very odd.

 

[Sharkbait19]

Looks like a stomatella snail - definitely one of the good guys!

 

[tbrown]

+1 looks like a Stomatella snail most likely although the color is different than most I've seen.

 

[Reeflix]

+1 on the stomatella. i have one in my tank and hasnt caused a problem

 

[EvilNick]

Looks like a stomatella snail - definitely one of the good guys!

Thanks!