I have successfully raised 2 batches of krib fry by removing the parents from the breeding tanks, as long as the tanks are reasonably small, say 8-10 gallons and are bare bottom, (so the fry can find the food easier). I don't feed them for a few days after they are free swimming as they usually just peck at the sponge filter, then I just start feeding them that cheap liquifry food you can buy anywhere and have had a 90% + fry survival rate.