need help ID something

[amixam98]

This morning I turned on my light and noticed something slimy slding across my tank. It was about the size of a dime, probably smaller. I took this picture before it crawl under one of my snails. I want to know what it is and if it's something good for the tank. It looks slimy and has 2 antenna sticking out of his head.

 

[fawkes027]

The pictures kind of hard to see to tell. But maybe a Stomatella snail? Anyone else know?

 

[clamm]

perhaps a snail out of its shell

 

[Piscevore]

stomatella varia

 

[amixam98]

Is that good or bad? doesn't matter?

 

[dz6t]

looks like a cap snail. Can't tell if it has a shell or not.