I've heard of some being mean but as far as aggression towards other cichlids and fish not the same as a male. Females aggressiveness comes out during spawning and show more so with other cichlids when breeding in a tank with other fish. All the Festae I have kept and friends I met always had brutes of males. I kept Festae for over 12 years I just got back in the hobby and have both at the moment and male dominating the female right now. Awesome fish my favorite to keep but notice they can't keep up with the much faster growing trimac and Umbee but can hold their own so far