Need a positive ID please.......

[MoonInTn]

I wasn't sure which forum to post this in so thought this one might be a good place to start. Found a few of these hitchhikers, (and have already killed a couple from not knowing for sure what they are), but thought I better try to post up a pic or two and see if anyone could tell me what they are, and if they are friend or foe in a reef tank. Not sure if you can see from the pics, but they move like a snail, and have what seems to be antennas at the head. They don't have a full shell like a snail, but only covering maybe half of the body, if that much. Any help would be appreciated... http://reefcentral.com/gallery/data/500/143076snail1.jpg
http://reefcentral.com/gallery/data/500/143076snail2.jpg

 

[LeslieH]

It's one of the Stomatella species that are common hitchhikers on live rock & corals. Considered a beneficial addition to any tank.

 

[MoonInTn]

Thanks Leslie. I thought it might have been Stomatella too but that was AFTER I had found a pic of them here. Thought I should try to post up and see if anyone could help with a positive ID on them. I figured if I didn't put them in the tank then they need to come out, but now I guess they'll be staying in the tank. Thanks again for your help. I knew I could count on someone here to know what it was.