What should I do? It is still in the beggining stages, and kinda on and off (there a couple days, then gone). It is on a powder brown tang, he is a good size about 6" long, and happily eating algae, mysis, or anything else I feed him. I soaked his food in garlic, but that is not a cure. I cannot qt him right now, I will be on vacation for a week, but I trained him to eat out of a net, so catching him is not the issue. No other fish has it. I tried garlic before and it seemed to work. If it is not gone when I come back, I will qt.