Arroyo Chico Alférez is a stream located in the Oberá area of Misiones Province, Argentina, flowing through one of the most biodiverse regions in South America. Misiones is characterized by its subtropical Atlantic Forest, red laterite soils, and a network of arroyos (streams) that drain into larger river systems. The Oberá region sits in the central highlands of the province, and streams like Arroyo Chico Alférez are typical of the area — relatively small, jungle-fringed waterways that wind through dense native forest and agricultural land. Arroyo Chico Alférez is recognized as one of the notable fishing spots within Misiones Province, ranking among the top destinations for anglers exploring the region's rich freshwater fisheries.