Haitensis have no competition where they live, they are apex I believe. Haitensis get bloat when pushed by other fish and they are not dominate. Dovii are simply put, killing machines. There is no cichlid alive that compare to a dovii in terms of aggression. A full grown dovii will literally try to destroy a tank to get to you, to this day I have never seen anything come close to the ferocity that a dovii shows when attacking the glass, or the water siphon, or your hand, etc. haha
Ehh, I would disagree. I've seen some nasty buttikoferi, trimac, and even midas try killing anyone near their tank. In terms of overall size, sure the dovii hands down. But if size was out of the option (lets say they were all a foot long) I've seen crazier red devil/midas than dovii. Glass banging is different from fish-aggressive.
