Well for the fry I use a mixture depending on how old they are.
for the babies i'll feed them liquifry, brine shrimp and finely crushed mixture of flake food, algae flake food and sinking pellets (all ground down to a powder). The fry also live inside a plant that I have and i have seem them feeding from the plant too, whether there are infusoria living there or they are eating trapped food I dont know but they all survive and i've yet to find a dead fry in my tank!
For the older fry and adult swords i'll give them the same flake food that the fry get (just not powdered!), and i'll also give them some artemia and blood worms (they LOVE the worms!!). I recently bought frozen Krill in AV and they have taking a liking to these too.
I wouldn't worry about these fish not eating..they are horses!
If you find your fish dont eat the flake food try different brands and different types of food, try varying their diet too...with live food and flake food. Should work.
O and I got your PM, i'll pass on your details to my dad.