I have a question for the gurus, I have a 300 gal. tank. Right now I have a 16" giant gourami, a few +/- 6" cichlids, 5 plecos 10"-14", and don't ask me why, a 16" koi (it came with the tank) hehe. Anyways, I got a 9" oscar as well, though not in this tank because he attacked the GG. To the point of charging and scale ripping. It was only the GG that was attacked. That tripped my mind being that the GG was always the aggressor. Is there a way I can soften the aggression from the oscar? I see several tanks in here that are nicely stocked (loaded) with oscars in it too. Do I have to stock up the tank to spread the oscars aggression? I would really love to keep the oscar in this tank rather than the 55 he's in now. Any help would be appreciated.