It's all relative. Compared to those you named, yes, a GT is a pussycat. In relation to the fish listed in the original post, depending on the temperament of that individual GT, it very well could be easily the most aggressive fish of the bunch.compared to other big cichlids they are nothing I've had over 20 in my time 3 inch - 7 inch males they will bully what they can but plenty of cichlids and fish are meaner texas cichlids, red devil, vieja, tilapia, parachromis etc, large pike cichlids, for south American cichlids there aggressive but they aint got nothing on central Americans or africans