Crocodiles are reptilians. Piranhas are fish. They aren't close to each other.
Piranhas enemies can be river dolphins , crocodiles , herons !!
Piranhas are eaten by Otters, bigger fish like sharks and also dolphins and crocodiles eat piranhas :) hope i helped!!
Piranhas and crocodiles
Crocodiles, humans, large crabs, anacondas, cranes, jaguars, freshwater lobsters, and caimans.
other animals that live in the river like maybe piranhas or crocodiles or alligators. \
Snakes and crocodiles because snakes and crocodiles are both reptiles but a frog is an amphibian.
Piranhas are in the subfamily Serrasalminae. Other fish that are in this subfamily and that are closely related to the Piranha are Pacu and the Silver Dollar
The amazon otter is prey for caimans, crocodiles, jaguars, mountain lions, large groups of piranhas, and green anacondas.
Jaguars, black caimans, and very large groups of piranhas eat anacondas.
snakes and crocodiles
Piranhas live in fresh water, and Orcas live in salt water; It is highly unlikely that they will ever meet in the wild. See related question to see what does eat piranhas..
Some piranhas are herbivores, some eat meat, and some species are classified as omnivorous. So it depends on the exact species.