I had a gorgeous 11" orange/white morph Midas in with my 17" Peacock bass and they were best buddies for about 4 days and then the Midas started nipping at the peacock bass. Within hours he was chasing the peacock bass around the tank. I had to take the Midas out and put him in another tank. The fish the peacock bass has been living with almost since day one are a 18" Tiger shovelnose catfish, 16" spotted gar and a 13" Royal Pleco. The ONLY problems I have with this bunch are at feeding time. The Peacock bass is such a fast eater... I can put 10 feeders in there and she (the female peacock bass's name is Wanda) could eat them all before they get a single one. I have tried using a divider at feeding time but every time I put it in the tank they start freaking out. I want to eventually separate any other feeder eating tank mates from the peacock bass because of these feed time issues. Besides the fact that the peacock bass scares the hell out of everybody in the tank with its reckless pursuit of the feeders... I have not witnessed any aggression problems except with the Midas. The Peacock bass may be huge but doesn't seem to have the goods for going up against other large aggressive Cichlids like the Midas. I almost forgot... the peacock bass tried to eat my 12" Arowana once while I tried to put it in there because it was getting nipped in another tank (I know... that was DUMB!!!). You better make sure what ever you put in the tank will not fit in its huge mouth...

