they are males they seem to be fine any pics? i would try feeding grasshopper but first cut of the grasshopper's "jumping legs" then feed it to your toad. be sure he is on land and feed him near him place it then he will eat it this happened to mine also and ate grasshopper now! or give him earthworms. just he wants to eat something moves fast which can see it my fire belly loves grasshoppers.Try it and update us what happened. be sure the grasshopper is a nymph and no insecticide or spray. update us what happened.