I have a 75G Mixed reef with a 20L sump. I got a McCosker's wrasse a couple months ago, healthy and colorful. He eats like a pig and is very active. The last few weeks he has gotten thinner and thinner, he still eats and is still active but bone thin. I was feeding my tank yesterday and noticed him come out from behind some rock and he looked like a ghost! Im not kidding almost completely white. This morning and so far today, his color looks normal. I tried to catch him a few days ago and couldn't, he's too fast. It brought me to the question, even if I put him in QT, what can I do different, I don't know whats wrong with him. Side note: All other fish are completely healthy and color looks normal. Also I feed brine, mysis, homemade mixture of things, and nori. I soak the brine and mysis in Kent Garlic Extreme, and the homemade food already has garlic. Please help, this guy is a beautiful specimen and I don't want to lose him.