Kole Tang Issue?

[Indy]

My Kohl Tang has started acting a little odd. He's rubbing up against the glass next to the heater. He'll come out to eat and do a quick lap around the tank then right back to rubbing the glass. He really darts in there hard. You can hear him when he hits.

I checked out all the chem levels and they're all good. I don't see any spots on him... he looks healthy.

I did introduce a couple new fish last week but they're doing well. So are the paired clowns.

Any ideas?

[tdwyatt]

Originally Posted by Indy

My Kohl Tang has started acting a little odd. He's rubbing up against the glass next to the heater. He'll come out to eat and do a quick lap around the tank then right back to rubbing the glass. He really darts in there hard... ...I did introduce a couple new fish last week

How big is the tank? how many fish total, and how big? What fish did you add, and are there decent hiding places in the tank for all the fishes?