The Rio Miranda winds through the heart of Mato Grosso do Sul, Brazil, flowing through the iconic Pantanal wetlands — the world's largest tropical wetland ecosystem. This river is a premier sport fishing destination in South America, renowned for its extraordinary fish diversity and the quality of its angling. The Miranda River basin supports an astonishing 143 documented fish species distributed across seven orders and 30 families, making it one of the most biologically rich river systems on the continent. The river contributes roughly one-third of the total fish catches in the South Pantanal, with sport fishing accounting for approximately half of that harvest — a testament to the river's popularity among anglers. The lower Miranda flows through the Pantanal floodplain, where seasonal flooding creates a dynamic and productive aquatic environment, while the upper reaches and plateau streams offer a distinctly different character with clearer, faster-moving water over varied substrates.