Need help narrowing down a snail ID, please

Homestarmy · Mar 3, 2026

Hello,

I had/have an issue with a Leopard Flatworm that I was helped with yesterday (and am still attempting to resolve). While searching for it last night with a red light, I noticed a large number of small snails on my return glass (and a couple on the shell of a hermit crab). I was able to pull on this morning and grabbed a couple of pictures. Searching has produced multiple different answers (from Button Snail all the way to a Scotch Bonnet, which it is most definitely not), so I was hoping someone here could help with the identification.

Thanks

Tahoe61 · Mar 3, 2026

Orgins of the rock please, geographically?
A size reference would assist as well, place snail next to another object.
Did you rule out Collinista?

Homestarmy · Mar 4, 2026

Tahoe61 said:
Orgins of the rock please, geographically?
A size reference would assist as well, place snail next to another object.
Did you rule out Collinista?

The majority of the rock is Marco rock, which is mined in Florida. I have one shelf piece in the tank I bought live, but I'm uncertain of where it came from. But I did cycle the live rock when I added it, which was probably at least a year ago.

I had originally cropped a gnat out of the first set of pictures (didn't think about the size perspective aspect of it). It's pretty small as you can see. The snail itself is inside an Algae Barn container.