Brine shrimp

[Sandy Bear]

From Wikipedia:

"Growth Food", containing yeast and spirulina, is then added every few days.
http://en.wikipedia.org/wiki/Sea-Monkeys

[fish4all]

I have used decapsulated brine shrimp eggs with fir success for fry, specifically cory cat fry. they were tiny and did pretty good on them and vinegar eels.

As for the brine shrimp food being good for fry, maybe but it is going to extremely fine as the brine shrimp filter feed.

The neat thing about the de-capsulated brine shrimp eggs is you can "pop" them in the microwave, pretty much like popcorn. This makes them very light and easy for the fish fry to eat. I am not sure if it owuld work for tadpoles but I don't see why not.

Brine Shrimp Eggs

They have some very good fish food flakes as well. I had very good success with their foods when I bred guppies, cories, swords and platties.

[fish4all]

As for plants, they are great for feeding fry and tadpoles but they really need to be in the tank for a while. What happens is the plants provide a place for micro things to grow, algae, plankton, artemia and other things that fry and other hatchlings can feed on. Another option is a well seasoned sponge filter, doesn't sound like it would be beneficial but the surface area allows for the growth of massive amounts of small food items to grow to feed hatchlings. Just have to leave it alone even when it starts to look a little "nasty". Not the best choice but an option.

For a standby, put some fish food in a blender or small food chopper and turn it into a powder.