Guppies, mollies, platy's, convicts, rosy reds, fat head minnows, and gold fish are easy to breed. The only problem with waiting for food for large fish is that you need the fish to grow which requires breeding and grow out tanks. You could wait months before you get something that is a decent size for your larger fish. The cost and maintenance to grow large feeders is a job in itself.
Since your fish are smaller they can eat the smaller feeders and be happy. I don't think they should be fed, feeders as a staple.
Since your fish are smaller they can eat the smaller feeders and be happy. I don't think they should be fed, feeders as a staple.