A few days ago, I bought a small pearlscale goldfish, and set him up a 10 gal quarentine, with live plant clippings and water from my established fish tank. Every morning when I wake up he is floating ot the top of the tank, with his fins clamped, but as soon as he notices me, he acts as if nothing is wrong for a little while. He also looks like he has blood under his "chin" (not like an open wound, more like a bruise), and it is also where his front fins attach to his body. He also has what looks like a blister on top of his head (I am sure it is not a headgrowth, because it is getting bigger and bigger every day). Any suggestions what might be going on here?