Rollerblading along the road
I have watched a few videos etc. and found how to tell if eggs are viable and how to care for them.Assuming the female is gravid they might be duds if they are first time breeders. I don't breed but from my friends that do breed, I think E anthonyi/tricolour might be fine if you raise them in the tank since they usually aren't aggressive. For when the tadpoles are out of the water and into froglets make sure you have a couple springtail colonies going since melonagaster flies might even be a little big for them.
I might be wrong but a week after laying you should be able to tell whether or not the eggs are fertile.