red piranha or coicoa pygocentrus nattereri, freshwater fish from a tropical climate

aggressive amazon america animal aquarium aquatic beautiful belly bite brazil carnivore cichlid climate coicoa color colorful coral dangerous denture diving environment ferocious fin fish freshwater green jaw jaws macro macropomum marine nattereri natural nature paraguay piranha predator prominent pygocentrus red river south stones subtropical swimming teeth tropical underwater uruguay vegetation water wild wildlife yellow