The first thought was, "Okay, these eggs aren't fertile." I decided I'd give the parents a shot anyway to see what happened.
Immediately there was a dispute. Geophagus are mouthbrooders, but orangeheads are delayed mouthbrooders (taking up the fry after they hatch into wrigglers) and parnaibae are immediate mouthbrooders (collecting the eggs as soon as spawning ends). The male was going behind the female, collecting eggs to chew on, and she seemed to think he was eating them which caused her to start attacking him. To calm them down and give the eggs a shot, I pulled the entire flowerpot and put it in a 20 gallon growout tank.
In two days I had little black tails wriggling.
About 90% of the spawn fungused over but I ended up with 13 fry. I think this may be for two reasons: 1) The female is very young and this is her first spawn, and 2) The male is quite old now and doesn't seem in the best health. I think both may have contributed to the low fertility rate.