Hi there, i am looking into buying some red bellied piranhas. But im kind of on a low budget, just 90 bucks xmas cash (canadian). All the piranhas that come into my local pet store are young, mostly the size of a nickle or dollar. My plan is to get a smaller cheap tank to start them out when they are small. my birthday is coming up in two months and my dad said if i wanted he would get me a nice big tank with all the bells and whistles. So what i want to know is what size tank is the smallest that is suitable for 4 very young piranhas that will be in there for 2 months and what are the necessities to have in it. I do want the best for the little guys and i have heard on some sites that change can stress them out. Maybe i should just wait the two months and start in a big tank, but those little fishies are so spiffy and i really want a few.And also, what do you guys think the healthiest food is for piranhas, i was thinkin i would try some shrimp or sardines or something.