WHat is this? ID please

[eric mac]

Is this a pest?

I saw this in my system early this morn. It's pink in color, about a 1/4 an inch, with two antennas. Kinda shaped like a slug.
Sorry for the pick took with my phone.

 

[Misled]

google stomatella snail.

 

[TitansFan]

It looks to be a Stomatella. A beneficial snail that is a herbivore. They are the good guys.

 

[quickwiz00]

Definitely stomatella. I've got a bunch of them; I had a few hitchhike in some chaeto and now they are all over the place. They are cool little snails, if you aggravate them and they feel threatened they will release part of their foot as a defense mechanism.

 

[eric mac]

Thanks guys. That's what it is. I wasn't sure if it was good or bad. It looked like it was eating algae and not of my corals had bite marks. I just wanted to make sure.