#odd behaviour

My Blue Eyed Kole tang has been showing a weird pattern of behavior and I'm curious if anyone has experienced the same thing. Aside from usual pecking at rocks, glass, etc for Algae, sometimes when I turn and look at the tank, he will charge around or swim quickly to the side where i'm nearest...

Hey guys I’ve had these 2 clowns for around 2.5 months now and everything has been going great. No new additions to the tank since adding these guys and everyone else seems perfectly happy. I noticed this morning that both the clowns appear to take it in turns to pick at the rock and then rub...