Yeah, that is what I'm relying upon myself. I've had several fish together even when I had strictly an agressive tank that everyone said not to put together. I have learned that you can actually take out a trouble maker and re introduce him back into the tank after a few hours and it's like a reset button with the fish and have no problems after that, funny huh. And how I wish I had the room for a 450g tank. You are the kind that makes me want to make a addition to my greatroom/ livingroom, LOL.