snail with no shell?

[Scooby]

I found something new tonight. After I turn out the lights I often get the flashlight and look around for new life in my tank. Tonight I found this "thing" it looks like a snail...but without a shell, it has two antenae. I tried to get a pic but it went into a hole in the rock. I almost missed it....it was a perfect match with the color of the rock (off white).
Any ideas what it may be?

Thanks
Dave

I got a pic!

 

[Sadielynn]

Stomanella safe janitor sign of healthy system ....

 

[Fluff]

I could have sworn I answered this last night (before the photo). :?
I agree, it's stomatella varia. They actually do have shells, the shell is just flat. They are awesome herbivores that feed on micro algae so they are beneficial. They will reproduce in your tanks and the colors may vary some. Good luck.

 

[melosu58]

I agree also as I have a few in my tank and they dont cause any problem.

 

[Scooby]

Thanks for the replies! This is my first salt water tank......it never ceases to amaze me!

Dave

 

[nicksgirl]

Hey, I had one of these.. I thought the same thing (snail without a shell).. But one of my hermit crabs ate it before I could get a picture. Do they come in both white and neon green?