As much as it costs to breed in the first place, you're going to have a difficult time convincing your parents this is going to make you money. You'll need a grow out tank of at least 20 gallons, fry food, foods to condition your pair, tons or jars, heat and filtration for the fry, meds if they become sick, etc.. There's also all the supplies you'll need to ship the actual fish, boxes, foam, bags for the fish, heating pads. There's also the chance you'll end up buying all the fry supplies and something will go wrong and you'll lose all your fry. I don't mean to be negative here but I think you'll have to take another approach than making money when it comes to breeding. Its very likely you'll spend more than you make.
Maybe if you can save up your money and afford all the supplies you need without your parents chipping in, they'll be ok with it. Show them your responsible enough and its something you really want to do.
Last edited by ksage505; 10-23-2011 at 10:38 PM.