Article: After the mother fish gives birth, you can return her to the community tank (assuming you separated her). The fry will now be free to develop without threat of being eaten. Baby platy fish do not require different food from adults. You can feed them the same pellets or flakes that you feed the adults, as well as freeze-dried bloodworms and tubifex, and brine shrimp.  Feed the fish small amounts several times a day, about as much food as they can eat in three minutes.  Some platy owners like to crush or grind pelleted or flaked food before feeding it to fry, as this will make it easier for them to eat.  For platy fish to develop the brilliant colors that make them so beautiful, they must be fed a varied diet early in life, containing both protein and plant-based foods.  Specially formulated food is commercially available for platy fry, but is not necessary. Just as with your adult platies, you'll need to keep the tank for the fry clean. Changing 25 percent of the water every two to four weeks is typically adequate, but this depends on the number of fish. If the water becomes cloudy or full of debris, it should be changed more often. Once they have grown large enough to fend for themselves, you can move the young fish to the community tank with the older fish. Platy reach full size after about four months. If you decide to try to introduce them to the community tank sooner than that, keep an eye on them to make sure they aren't being eaten by the adults.

What is a summary?
Return the mother to the community tank. Feed the fry. Keep their tank clean. Introduce new fish into the community tank.