Well either get a packet of Hikari First Bites, or baby brine shrimp, your LFS should carry both of them. I only have experience with First Bites, so I'll expain how to feed fry them. Get a small cup, fill it with tank water. Drop a small pinch of first bites in, let it settle and sink for a good 5 minutes. Get a turkey baster (you can buy them at walmart cheap). Suction up the first bites in the baster and spit them out right on top of the fry. This is known as target feeding, and it works!
GL and I hope this helped!