If you want to raise fry. I mean really want to raise fry you should remove the eggs to a small tank with good filtration and water movement and let them hatch.
Of course you need to be able to feed them. I hear of all these micro foods and such but back in the day I raised brine shrimp.
LOTS OF WORK. Of course I am not up on the latest food stuff.
Most fry don't really need the parents. If they are alone in a tank with proper conditions and the right food they will thrive.