The Río Aluminé is one of Patagonia's premier fly fishing destinations, flowing approximately 140 kilometers (roughly 100 miles) from its headwaters at Lago Aluminé through dramatic canyon landscapes before joining the Río Catán Lil to form the Río Collón Curá. Located in the Province of Neuquén, Argentina, the river winds through breathtaking scenery characterized by towering canyon walls, unique rock formations, and willow-lined banks that create ideal habitat for both aquatic and terrestrial insects. The Aluminé is a complex, ever-changing river that receives water from several significant tributaries including the Pulmari, Quillen, Kilka, and Malleo rivers, giving it a diverse character that shifts considerably along its course. Crystal-clear waters, dense trout populations, and world-class hatches make this river a bucket-list destination for fly anglers from around the globe. Catch rates of 15–25 fish per rod per day are not uncommon, with average fish running 16 to 18 inches — and late-season lake-run fish regularly pushing the 30-inch mark.