Are guppy fry a good choice for feeding my african aquatic frogs?

They don't seem to be eating anything i give them, unless they eat it from the bottom when i'm not around. I have tried tropical fish food, which i have tropical fish (not in the same tank) so that was first on my mind because my old albino frog ate that, and i have also tried Newt and Aquatic Frog pellets. But i found out that they eat fry, and i was a guppy breeder. But will the fry be a good choice??