Good or bad limpet?

[Msmith2813]

I don't see the hole on top, so I don't believe it to be a keyhole limpet. Just wondering if they're good or bad? They are pretty much confined to the sump for now, I haven't really noticed any in the dt. I used to have tons of (what I believe to be) tunicates in my sump. They pretty much disappeared and shortly after a ton of these guys started appearing. Coincidence? Thanks for the help!

 

[TwistedTiger]

Good.

 

[Msmith2813]

That's what I was thinking, but just wanted to make sure. Do you think they could be responsible for the tunicate disappearance? I haven't been able to find too much online about it

 

[TwistedTiger]

The only thing they did in my tank is clean the glass. Never harmed anything.

 

[Reefing Madness]

They are the good guys.