i would agree, my O's recently layed, then about 2-3 days later half started wriggling and the other half went mouldy.
It was at this stage i removed my other fish from the tank, (angelfish, small O and a red tail shark) because of the risk that once they started moving around they would get eaten, hopefully some-one who knows replies this as i dont know what parrots and convicts are like as parents, but i dont think they should eat them, they might though (sorry i cant help more here).
If they are hatching i would remove other fish as it will be harder for the parents to guard small fry and some may get picked off by other fish.
hope this helps
p.s once eggs hatch they look like sperm (best way to describe it)and they wriggle like worms (they should stay together as a group) after a few days they will have used up their yolk sack (head of sperm) and be little fry swimming freely around