(1) Some items are curios, such as a necklace of peccary teeth and a piranha jaw fashioned into a cutting tool.(2) You become fish bait to the school of piranhas circling around.(3) I would rather throw myself to piranhas than have that reputation.(4) Two well-known fish with multiple rows of teeth are piranhas and sharks.(5) She glanced across at her large fish tank, where two piranhas swam back and forth.