I am new, and seem to be more confused by the conflicting opinions floating around everywhere, but here is what I have been doing:
Egg Yolk: Hard boil an egg. Take the yolk and put it in a ziplock bag, adding just enough water to make a paste.
Fish Flakes: put your fish flakes in a ziplock bag and crush into a fine powder, as fine as you can make it.
Hikari First Bites: Bought at the fish store.
TO FEED ANY OF THESE: take a toothpick and dip in the mixture. One dip is all I used for about 18 fry. I used the egg and crushed flakes for about the first 3 days or so, worked OK. I really like the First Bites food because it seems to float a little longer giving the little guys time to snatch it up.
Good Luck!!