Some cichlids are just psychos at the moment my mixed cichlid tank is "peaceful probably due to a 22inch giant gourami intimidating them when he swims my tank at the moment has :Well that synspilum wasn't playing around.
My buttikoferi was only 4 inches when she started to take over the 125. First my convict took a beating...then my female Texas and soon after my male Texas. Even defending eggs they couldn't stop her. Eventually all 6 feet of the tank was hers.
X2 ornatum cichlids 4-5 inches
X2 festae 1-3 inches
X1 dovii 3-4 inches
X1 Texas 2-3 inches
X1 green terror 5-6 inches
X1 salvini 1-2 inches
X1 jack dempsey 3-4 inches
X1 hemichromis elongatus 3-4 inches
X1 vieja argentea 1-2 inches (another fish which can hang with the big boys)
X1 albino giant gourami 20-22 inches
X1 tyre track eel 10-11 inches
X2 synodontis Angelicus 3-5 inches
X1 Synodontis eurupterus 5-6 inches
X1 Synodontis notatus 4-5 inches
X1 unknown Synodontis 4-5 inches
X1 bristlenose pleco 2-3 inches
X1 Chinese algae eater 5-6 inches
X2 indo tiger fish 3-4 inches