My grandfather is driving me nuts asking about the fry all the time!I need to know when to start feeding them.....they hatched yesterday morning...

That's a good question. When my fry hatched, they had a sac attached to them which is their source of nutrients. I think they feed off this for the first 3 or 4 days (with Andrea was here to confirm this)

Then, i started to feed fry food I purchased from my local aquarium

You should start feeding them when the yolk sac is gone and they are free swimming around the tank. You can feed them fry food from the LFS (I use Hikari First Bites), baby brine shrimp (you would have to raise them yourself) or infusoria. Infusoria is basically green water, you can take a glass of water and put something in it, like a bannana peel chunk, put it in the sun and you will see the water turn green with tiny creatures. Take an eye dropper, suck some up and put it with the fry.

Thanks! I tried the egg yolk and it worked! But its very hard to see them eat itMy tank is also filthy! I have no idea how to clean up the mess from the unfertilized eggs.I'm scared i accidentaly kill the little fishes

I fed mine the liqueifed egg yolk after about 3 days, I think. I fed it several times daily and then just did small water changes every other day or so. I used airline tubing to siphon out the water and to carefully avoid the babies. You also have to be very careful about pouring it back in. Do it slowly so you dont disturb the water too much.

The best for getting the new water back into the tank without killing the fry (any large disturbance of their home right now can be fatal to them) is having a bucket with the new water sitting a bit higher than the tank, and having the airline tubing hang from the bucket into the tank. That way only a small amount of water basically just runs into the tank slowly, and the fish will be fine....