Flat snail in reef tank

[Nko]

I found a flat snail in my tank and was wondering what it was, if it is good or bad, and if there could be a lot more.

(it is in the very middle of my picture)

 

[KrisReef]

Limpet?

 

[Pistondog]

looks like a limpet. Had some come in on live rock from the gulf 2 years ago. They clean like snails. Some report infestations of dozens of small ones on the glass. I consider them good until/if they get out of hand.

 

[fishguy242]

poss, stomatella also good

 

[SHNICI]

poss, stomatella also good

It's Stomatella snail, very good CUC. Love to have them, good cleaners

 

[Nko]

poss, stomatella also good

Yup that’s it. Thank you, I’m only 7-8 months in and everything I see scares me a little lol