The Addams Family's pet piranhas are named Aristotle and Alexander. They are kept in a tank in the family's living room and are beloved by the family. They are known for their ferocious appetite and have been known to attack visitors.
The Addams Family does not have pet piranhas. However, in the 1991 film adaptation of The Addams Family, there is a scene where Uncle Fester feeds a live fish to a school of piranhas in a tank, but they are not referred to by name.
