How does a piranha contribute to the ecosystem?

Piranhas play a vital role in their ecosystem by helping to maintain the balance of aquatic life in rivers and lakes. As carnivorous fish, they help control the population of smaller fish and other aquatic organisms, preventing overpopulation and promoting biodiversity. Additionally, their feeding habits contribute to nutrient cycling, as they scavenge on dead or weakened animals, aiding in decomposition. This makes them important scavengers and predators within their ecological niche.