Thanks for all the responses, guys! Nah, it's not white and fuzzy, it's actually silver and pretty to see when he flares at me. :) And he doesn't seem sick in any way, he's actually adding on to his bubblenest as we speak. His appetite is just fine, too, so I'm guessing he may just be changing colors a little bit, which is exciting! I'll try and get a picture if he ever cooperates with me lol I want you guys to see it, the silver scales are kinda cool!