The redhump geo's are really very traditionally normal geo's ... which is why they were removed from the Geophagus genus (they are currently orphaned and listed as 'Geophagus').
They are harem, advanced mouthbrooders much like Malawi cichlids are (immediately taken into the mouth, no pair bonding). If you get more, get 2-3 females. Males are rough on each other and on females. They also seem to grow much faster than Geophagus or Satanoperca species. They do sift, so add some sand!!