Today I noticed something strange on my Foxface Rabbitfish. His behavior is normal and he’s acting fine. There are small-medium spots scattered on his side and they look brownish/beige. They are like nothing I’ve seen before as it doesn’t look like ick or anything else I can think of. It’s only on that one side of him and I don’t see it on any of my other fish. What is it and are there any solutions to fix it? I attached images as well.
Nitrates- 13.8
Phosphates- .08
Alk- 9.8
Salinity- 35
Calcium- 510
Nitrates- 13.8
Phosphates- .08
Alk- 9.8
Salinity- 35
Calcium- 510