Little yellow snail name

[gsw0716]

Hello, I've noticed a few of these tiny yellow snails in one of my tanks. Would like to know the name, I have some standard Stomatella snails, but these little yellow dudes are new to me. Thank you.

 

[Gumbies R Us]

Photos under white lights? Having a hard time figuring out what I am supposed to be looking at

 

[gsw0716]

Sorry. I tried to take a clear of it. Just comes out blurry on the actual animal

 

[BryanM]

I don't know what that is, hopefully it'll move where you can get a better pic.