It has always been my opinion (and a damn good one , I might add) Parrots, Chocolates, Uaru, Severum and Discus most likely in that order on the evolutionary tree shared a common ancestor. Festivum and angelfish also probably evolved off the severum branch of that tree as well.
Every time I bring up the subject of cichlid evolution I hear crickets....lol. It just can't compete with stock my new ?????? threads.