- Apr 27, 2017
Hello, I am here because I have a question. I was wondering how big black piranhas get when raised from a juvenile in a tank. Now, I've heard tank raised black piranhas only reach 12 inches, I've also heard people say that they reach 16 inches when tank raised. Also, are black piranhas better than red belly piranhas In your opinion? Never hurts to wonder. Thank you for the help.