Pest snail/slug?

[Jwheld]

What the heck is this? Just noticed it for the first time tonight.

Looks like a very large stomatella Over an inch and kind of crawls along the class. I have small ones in my sump so unless one crawled up my overflow, I've never seen one in my display.

Hoping it's not a nudi.

 

[humphreyhh]

It's beneficial snail. Eats algae. Don't worry. It's called stomatella. Great addition to the tank. Nocturnal so you won't see him often.

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