The Río Paraná in Corrientes, Argentina is one of South America's most legendary sport fishing destinations, a massive, dynamic river system teeming with biodiversity and offering world-class angling for some of the continent's most prized freshwater species. With more than 350 fish species identified in its waters, the Paraná ranks among the most biodiverse river systems on the planet. The river forms the border between the provinces of Corrientes and Santa Fé along key stretches, and its varied habitat — from clear-water rock gardens and fast-flowing runs to sandy flats, deep cut banks, and tannin-stained black-water creeks — creates a richly textured fishery that rewards both sight-casters and exploratory anglers alike. The annual migration of sábalo, the golden dorado's preferred forage fish, transforms the Paraná into a spectacle of predatory activity, with large dorado busting schools of baitfish along sandbar edges in scenes that are as visually thrilling as they are productive for anglers.