Small Limpet, keep or take out

[blackstallion]

I found this small Limpet in my sump and threw him into the tank... although now I'm questioning the wisdom of this action. Any advice of keeping him in or taking out? He's very small, like 1/4" Max, probably slightly smaller.

 

[BrandonS]

Keep, good clean up crew. Just don't scrape them against glass when cleaning. There shell will scratch glass. I have lots of them, never had any issues.