recently the pbass with no fading black bars is too aggressive towards all the fishes in the tank! controlling the middle of the tank leaving pretty much just the sides to the other fishes. I can tell the other pbasses are stressed out because their camo colors are always showing, making them look dark. The only one who isn't showing signs of stress is the bossy one who remains white and yellowish all the time. What can I do to bring peace to the tank? take him out? put in more decoration for cover? put in a tank separator?