I'm thinking of selling my 4 5-6" rbps and starting again with 5 baby rbps. I think it's more fun to watch them grow up from babies. I'm only 15 and I'm waiting untill I have my own place tilll I want to grow out the piranhas to their max and keep them in a huge tank. I just think for now that it's better to buy babies and watch them as they mature over the years. Who else thinks that watching the p's grow up is the best part of having this awsome fish?