i foun when breeding them, i put 3 females in with one male who had built more then one nest or kept a nest in tact very well once your have eggs in a "nest" take the females out. The male will tend to the nest and the new fry once they hatch. you can feed them with powdered food, of live like micro worms. Watch the dad for a few days as he will eventually start to eat the young. once this happens take him out and leave the youngins behind.
Good luck.