If you move your adults, its good to test your water and do water changes. Possibly 25-50% a week. Watch for ammonia spikes if the tank isnt fully cycled.
Baby danio fry go nuts over infusoria the first few weeks which is pretty simple to culture.
Tank water, from a filter or live plants, in a glass jar with a decaying plant can make a nice culture of paramecium in about 5-7 days.
When the water is a bit cloudy and smells "sweet" you can use a turkey baster and drip to the fry.
There are great instructions in the forum on this.
Crushed egg yolk and hakari bites are readily accepted too. Just make sure to remove any uneaten food immediately and do water changed as well.