Interesting facts: Known as the "King of the River" for its strength and swimming ability, the dourado is a highly agile, scaly fish capable of leaping to capture its prey. Its golden coloration, with reddish reflections, favors its camouflage and success as a predator. Reaching up to one meter in length, it is considered one of the main predators of the freshwater fish fauna of South America. It is generally found in fast-flowing, well-oxygenated rivers, such as the Paraná, Paraguay, and Uruguay river basins and the Patos Lagoon system. But the dourado also faces great challenges, such as the destruction of its natural habitat, predatory fishing, and the construction of dams that block its migratory routes.