"Mushroomy" snail

[clifg]

Need help with an ID on this spikey guy. First thought was stomatella because of the flatness of the shell but it doesn't really drag anything behind it and it's got spikes on its she'll. Almost moves like it's a raised mushroom with armor. Very white flesh.

 

[bluemon]

Looks like a stomatella with nice growth on the shell.

it’s a cutie patootie and helpful for the tank. Also one of the few snails that reproduce well