well, space is the other issue. from what i've been told, you can only order from these places in the thousands. I'm thinking a good alternative would be to raise tadpoles from frog eggs (I found a university biology department where I can order them from. I live in a city, so it's hard for me to get out to a place where I can catch some wild minnows, although we do have a lot of parks here with streams and ponds. I guess it will just be an excersise in budgeting food!