Black blotches

[Mmun]

I have a blue eyed Kole tang with dark blotches on his skin. He’s eating fine and acting normal. I’m going attach pix but he wouldn’t hold still. Anything to worry about. I have had him for a while.

 

[HotRocks]

Do you have any aggression in your tank?

 

[Mmun]

Only at feeding. The aggressors don’t do anything towards the Kole tang