Help!! Weird Snail!

[jonnywater]

I dont think it is a sundial snail (or whatever it is called). The bottom is rather flat like a normal snail and it has two tentaciles coming out of the top and a normal foot. What is it and why is it in my tank though? My recent additions were all frags. Also this little sucker was on the glass. Didnt look like he was feeding off of anything, he was just sort of climbing the glass.
I just added the foot pics. You can see their two little tentacles and it looks as in the one pic he is syphoning algae off the glass. The second pic. I was thinking maybe Nerite snails?

 

[promisetbg]

Is he Black and white? If so he could be an Atlantic nerite.He could also be a heliacus areola ,sometimes called a sundial snail..this one specializes in eating zoanthids.

 

[jonnywater]

I was thinking the sundial one, but the reason that I ruled them out is because of the shell and "foot". All of the pics that I have seen of that heliacus snail - they have a foot that is shapped like a cone. Like a little christmas tree coming out of the bottom of them. In the first pic, that is his actual coloration. I havent completely ruled it out, but these things could have cared less about my zoos or polyps. Just went right by them then started climbing the glass. Pacific nerites have similar coloration patterns and variations.

 

[tstaub3]

there nerites

 

[ophiura]

Not sundial snails, IMO. I've got loads of these.

 

[wax32]

This is a sundial snail BTW, I got it off some zoanthids at my LFS:
http://www.zooxanthellae.com
Sundial Snail
I can't show you the operculum because this one is dead and it fell off, but normally it is pagoda or "cone" shaped.
I'd guess Collonista sp. for yours.

 

[romeofoeve]

i had a handful of those in my tank, they are young sundial snails, remove them asap! they eat zoos.

 

[jonnywater]

Looks like no one else agrees with the person that told me they are young sundial snails. Which is odd, LOL. Go look at every picture of every sundial heliacus snails. You will not find a pic of one that does not have a cone shaped foot. Also the shells are no where near flat at all.

 

[wax32]

The foot is the meaty part it moves with...
The operculum is the cone shaped part that plugs the hole.
Yours isn't a sundial jonny. I'd have to guess Collonista, which is a harmless diatom/detritus eater.

 

[schneidts]

Yep, I'd say Collonista as well. Also known as "mini turbos". They're good guys.

 

[mushroomss]

save the snail your gonna toss,its not a sundial,it jsut eats algae,i have tons