Friend, or Foe?

[Qirko]

Caught this little guy on one of my Hermit crabs today, and then he moved to the glass. it looks like some sort of a sea slug to me.

Any ideas? it seems to be an algae eater, and i'm guessing came with my live rock.

This is the back of the critter


This is his belly


Edit: After some review, is it possible its a Stomatella snail? I don't see much of a shell on his back, but it looks similar.

Thanks!

 

[Jason mack]

#reefsquad can help !

 

[saltyfilmfolks]

Yea, looks like a stoma. Tap on his back.
It looks like a shell there.

 

[andrewkw]

Friend. Stomatella that did likely come with your live rock or a coral. See http://melevsreef.com/node/394

 

[Qirko]

Yea, looks like a stoma. Tap on his back.
It looks like a shell there.

Gave him a good pat on the back, that's a shell. Good to know!