I probably wont put them together but I just wanted to see if they would get along. The piranha are 1" babies and the baby gator is less than a foot. I also do not feed the gator in the tank due to the mess it leaves behind and feed him in a separate area(the tub) Was just curious to see if it was possible as I feed him everytday and he doesnt touch the goldfish that are already in the tank with him. But I also do not want the piranhas eating his toes or tail. haha