They'll be happy on flake and bloodworms for now.
How do you have live fruit flies? Are they pests from around the house (can't imagine how you'd catch them) or do you buy them? Could be a nice treat for your fish. My danios love flies, but they're almost like sharks. They eat their daily food I in under 10 seconds and I when I fed them a squashed house-fly it was nothing but wings in less than a minute. O.O
How do you have live fruit flies? Are they pests from around the house (can't imagine how you'd catch them) or do you buy them? Could be a nice treat for your fish. My danios love flies, but they're almost like sharks. They eat their daily food I in under 10 seconds and I when I fed them a squashed house-fly it was nothing but wings in less than a minute. O.O