So I went out today and got 3 redhead Tapajos Geos added them to the tank and my male sajica is terrorising them. He is being a right nasty piece of work continually chasing them around, nipping them, bom diving at them when their backs are turned. Will this settle down or should I just re-home him? Its been going on all afternoon and it is also unsettling my very peaceful EBJD - he has gone a really dark blue/black.