I have noticed my royal gramma scratching his "forehead" on the rocks near his cave lately. There are some small visible places on his head that look like he has rubbed off the first layer of skin. They are still the same purple color so you can't see them even if I could get a great pic of the fish. All my other fish seem fine and even the effected one still eats like a pig with no other abnormal behavior. I do weekly water changes, and feed a combination of flake and frozen mysis/krill once a day. Lights are on 8hrs daily, I did add a solor fairy wrasse about a week and a half ago but I wouldn't think he is stressing the gramma as he keeps to himself. Any advice??? If this is harmful or treatable I want to catch it early.
Thanks,
Dave
Thanks,
Dave