Breeding Fish for my piranha

Question
Hi, I have a 10 gallon tank(also a 20 for when my fish get bigger) and a small piranha that will grow larger. I want to get fish that will continuously reproduce so that I can use some of the offspring to feed my piranha and the others to breed some more. Is this possible? And what is the best type of fish, besides guppys (I dont like guppies :) ) that will continously reproduce and that will be a healthy feeder fish for my beloved piranha. Thank you.

Answer
Hi Dane,
Thank you for your letter. I'm really not sure about that. Guppies are the ones I always hear about. You might want to talk to the staff at an aquarium supply shop that carries life food.
In any case, remember that overfeeding is the leading cause of fish loss. Here is my page on holistic aquarium care:
http://steamboats.com/aquarium.html
Nori