Anyone Know What This Is??

[albert_dao]

Stomatella, not elephant slug. You can tell by the tentacles extending from the mantel. They're like a mini-abalone. Harmless, beneficial algae eater that will reproduce readily.

[Myka]

That's a Stomatella, they come in the basic brown color and this black color. I have both kinds. They are my favourite snail, plus they are one of the few that successfully reprocude in our tanks.