I have a hybrid mbuna in a 65 with 8 other tank mates. They were moved into this tank over the course of 3 weeks and this one was the last one in. He was the alpha of the other tank and adjusted into the new space well. Almost two weeks later he started developing what looked like a fungus infection, little tufts under the scales. I did a water change and started a fungus treatment. He was still fairly active and continued to eat. 2 days into the treatment they got their second dose. The next day it looked like more was developing on his head. Early This morning he looked decent but I saw scales were starting to fall off. Now he looks awful and I doubt he’ll make it. But I don’t know what this is I, can anyone help me. He was the only one suffering from this illness out of everyone in the tank.