the goldfish will finish all the food before the ADF gets some, and then the ADF will starve.
btw, goldfish as feeders are a bad idea. they contain an enzyme that blocks the absorbtion of Vit. B, this can cause stunted growth, rickets and premature death in the long run. stick to minnows or guppies only.
check out my site below for information on Dwarf Frogs, even sutible tank mates.
In Depth Information On Common Aquatic Frogs


