The fry are very hard to keep alive, and the parents usually eat them.
You need a tank with a ton of 'grass' type plants on the substrate, so the fry can find coverage.. They also only eat micro sized foods, so it can be hard to get them to eat. They are like the size of a flea, and barely noticable when newly born.
The best thing I have heard for a food source for the young is green water algae.. They will eat the microparticles floating around in the water column. I have also seen people use a mesh screen to divide the parents from the babies.. Similiar to livebearer breeding baskets, the fry would simply drop down to the lower part of the tank where they can't be bothered..
Hope thats a good start! We've had a few threads on it before, might want to try using that Search engine!