I have post about it in the past, and he getting even worse. He snaps at anything and jumps at things even when nothing is spooked him. The pair of large oscars(it use to be just the albino, now it's both) kept with him both have really deep scars from where the he bit them, and they're forced to hide in the corner and he attacks just about anything that's put into the tank(except for the really small parrotbloods and the pleco that had been kept with him since we got him a few months ago). The oscars were gotten just a month afterwards and they been really peaceful together up until a few months ago. The aro also bites anyone that sticks their hand in the tank and drew blood a couple of times. He's not even that big, about 12 inches. I really do not know what to do now.