Just add water.
...but if you're seriously looking to raise them well, a 10 gallon tank, as bassbonediva suggested, would be best. To prevent them from being "sucked up", a sponge filter would be the best means of filtration along with a small heater to keep the water warm. I would recommend a bare bottom tank so the fry don't bury themselves and completely agree on the suggestion of java moss- they love it! Anacharis would be good too, as it will float, partially sink, and provide lots of cover for them. Even if they have their own tank, they don't want to feel like they could potentially be hunted!
A few snails, probably Mystery Snails, would be good to keep algae away and the bottom clean. A few Algae eating shrimp wouldn't hurt either to clean up excess food and get rid of any fry that don't make it. They stay small and I've never had one go after a living fish.
Hikari makes an great fry food called "First Bites". It's a powdered variety of tropical food with extra good stuff for the fry!
They need to be fed multiple times a day due to their very high metabolism, so expect to feed them at least in the morning, mid-day, and evening. They can also be fed on newly-hatched brine shrimp when they're very small and regular brine-shrimp as they grow.
I hope that helps a bit!