Parachromis are known for their aggression, cunning, teeth, speed and strength. They’re the ultimate package in a cichlid. Especially dovii and RTM, the average jag isn’t as bad as the average RTM or Dovii. Even if they lose the first encounter they’d just lay low and wait for another chance to attack. From my experience Buttikoferi don’t know when to back down. Flowerhorns have heart. They’re too slow and clumsy to even have a chance against other cichlids of similar size tho.
I’m not tryna debate on what cichlid is the meanest or what cichlid is bad enough to take on a rhom and win. It can go either way, but that should’ve never happened. The owner is just cruel.
I recently had a few Neets. Neetropolus nematopus. Man, those things are something else. I personally believe pound for pound they'd take out anyone, they got tough jaws for algae and teeth! Sheesh, 3-4 inch specimens send 8 inch fish to corners. Imagine a 12 inch Neet LOL!