Just recently purchased a a purple firefish who shipped to our local reef store with bite wounds from another fish. He's been in my tank for about a week. I noticed he has white moving spots on his body around his wounds. Could this be a disease or damaged scales from the fish attack. Stress? Water parameters are normal. Tried to take a good photo but..fish. Looked up ich and other parasites, but they don't seem to be fitting the bill. He currently eats and moves about normally. No rubbing against rock or thrashing.