okay of all the fish people are talking about. The one I would have to say is the Umbee. I've worked in my local fish shop for a while. And the most aggressive of them all was a breeding pair of Umbees. Most dirty and mean new world cichlids of them all. I cleaned a jaguar breeding pair tank, a dovi breeding pair tank, a red devil pair, hybrids, and so on. But the ones that stood out, and gave me battle wounds were the damn Umbees. Those little buggers will kill their siblings at only an inch long until there's only one left in the tank. All the other cichlids didn't give me problems when I cleaned their tanks, I showed them who's boss. But those Umbees man, they are beasts with teeth and a attitude that can't be matched by any other cichlid. I thought Dovis were aggressive, but once I got to know the Umbee. Umbees top my list.Who is the baddest america cichlid i would say dovi but im tryin to see what everyone thinks