This clown his been part of the team for a few months. I’ve noticed these blemishes come and go for some time. Fish were quarantined for 30 days in copper prior to going in the tank. Tank build is new so no other contaminants that I can think of. It’s only on his side and like I said it comes and goes. All other fish are symptom free and all fish act and behave normally. There is another clown in the same tank that shows no signs at all of any issues. Any ideas?