i have t. passiones and they are very aggresive,they constantly nip and chase ny other cichlids,even though all of them are larger than they are.
but i do love the colors on them.
What size tank and what are some the tank mates? This guy is keeping my robertsoni, deppi, and JD at the end of the 6' tank. These three can move out into other areas of the tank or they will be chased.