Isn't necessary though if they're used to eating non-live foods, a 'sudden' introduction of live foods will stimulate them, just as water changes or a change in their surroundings can do.
I had them breed while feeding them "NEw Life Spectrum Small Fish Formula" with no other suppliments, except the algea they eat off the plants. They haven't bred recently, but I have 2 paradise fish in there now, and 2 otos, and also a 2" CAE.