Ime they're very aggressive when they find a tank mate to be a threat (other cichlids of the same size/larger/other salvini). Ignores smaller fish. Eats fish that are small enough.
mean dudes, mine has a small territory tho... defends about 12" square, ive heard ppl saying they are gonna be reclassified 'parachromis' so the same family as dovii, jag ect.... would explain the meaness!