This has started within the last 2 weeks and has spread pretty fast on him. I feed him a variety of foods and lots of algae sheets (green kind). I feed Forumula 1 & 2, new life spectrum, frozen brine, mysis, spirulina and even raw shrimp on occasions. I would like to get this under control before it gets worse. This is a beautiful fish and I don't want this to happen to him. I thought a varied diet would help but it hasn't. He still eats like a pig. HELP.