Limpets

[whiteshark]

I'm pretty sure I have some kinda limpets in my tank. They don't get very big, maybe 1/4in at most.
What do these guys eat? Just algae? Will they eat coralline?

[dominick33]

You probably see a great number of them at night after your lights have gone off. They eat algae but I have not seen them attack the coraline