auratus cichlids are consider on of the more agressive cichlids out there. They will take on any cichlids of any size and will eventually kill your big cichlid. auratus are the mike tyson of the cichlid world. short but powerfull. I had a 75 gallon with 15 mbunas in it.and when i aded 2 auratus they kill four of my mbunas in a single day. so i gave them away. remember auratus are of the melanocromis family and they are all ultra agressive.good luck.