I purchased a tang from a lfs who qt'ed it for me for 4 weeks because I didn't have a tank large enough for it at my house besides my display. I got it home and now 6 days later I think it has Ich. It was very stressed from the move and hid all of the first 2 days and wouldn't eat or come out of hiding. Day 3 it come out a little and looked fine and the last few days has been out and eating like crazy. Its had the few spots on its fin and a couple on its side off and on. Its eating and not acting sick at all so I don't know whether I should be really concerned or not. Will my other fish get it if I leave him in there? Will it go awake on its own after he finishes settling down and the stress is gone? I've never had it in my reef tank. In my freshwater I treat with myasian tablets