Rio Preto is one of the most significant rivers in the Bahian cerrado, flowing from north to south through the far western reaches of Bahia state before emptying into the Rio Grande. This is a river of substantial volume, characterized by rushing rapids, deep pools, and stretches of well-preserved riparian forest that create ideal habitat for large, trophy-caliber fish. What truly sets Rio Preto apart from more accessible Brazilian rivers is its remarkably low fishing pressure — very few anglers make the journey to Formosa do Rio Preto or Santa Rita de Cássia, which means the fish are less wary and specimens regularly reach sizes that have become rare elsewhere. The river runs with an average depth of 3 to 7 meters, with maximum depths reaching 15 meters in the deepest pools. During the dry season, water clarity improves dramatically, concentrating predatory fish in the deep pools and making Rio Preto a premier destination for serious sport fishing expeditions.