Based on (successful) experiences feeding/feed training BG, GSF, and RES, here are my recommendations for feeds (available where aquarium supplies are found - pet stores, Walmart, etc.) to try:
Freeze-Dried Bloodworms
F.D. Baby Shrimp (quite similar to krill)
F.D. Krill
Daphnia (may be needed for very small fry???)
and of course small, live worms and bugs.
I suggest trying the following progression:
1. Natural feed (sinking).
2. Floating natural feed that later sinks (Krill is good for this).
3. Floating pellets.
I have had best luck switching gradually between the above groups, but you are likely to have to deny them food they like to get them to move to the next level.
Good Luck and report back, pass or fail. I have never started with fish so small - only 1"-1.5" fingerlings and bigger.
P.S. I'm interested to see how much cannibalism you see.
P.P.S. Bill Cody has a different method that is at least as likely to succeed, if you don't mind doing terrible things to worms in a blender.