How can you identify piranha?

Piranhas can be identified by their distinctive sharp teeth and robust, flat bodies, typically measuring between 6 to 12 inches in length. They possess a large, triangular head and a pronounced underbite, which gives them their characteristic appearance. Their coloration ranges from silver to a reddish hue, especially on their bellies, and they often have a noticeable lateral line running along their sides. Additionally, piranhas are known for their powerful jaws and aggressive behavior, particularly in groups.