Ok so I came home today to find one of my gold barbs looking very pale in the tank. Upon closer inspection it looked like he had a go tee lol I realize that fish can't grow beards so I quickly threw together a hospital tank as the QT tank is in use. The little guy is currently in a 2.5gal bowl with an air stone and pump while I try to figure out what to do for him. I saw him in the tank originally scrapping up against the rocks in the tank but by the time I had setup the other tank he seems to have colored up a bit more and some of the fuzz is missing. Thou he looks like he tore up his left gill plate a bit but still might have a small patch on him. What medication is best to treat the fish and what are the side effects if I have to treat the entire tank? There are no inverts in the tank currently.