Please help! I've done hours of research to try to find out what these white things on my tang are, I'll try to get a pic but he swims so fast its hard to get a clear shot. The white things are about 2mm in size and there are about 2-3, he rubs on sand and wants my hermits to clean him, silly thing, I bought a cleaner goby who is scared of him, my cleaner shrimp died the day after I got him, he eats great, breathing fine, swims fine, no other fish has them, not sure what it is or how to treat. He has a patch which looks like its missing scales prob from rubbing that side on sand. Anyone have any ideas?