Deep in the northern Amazon, the Rio Branco flows through the state of Roraima, Brazil, as the largest river in the region and the most significant tributary of the Rio Negro. Draining a vast basin of approximately 187,540 km², this remote and pristine waterway cuts through dense rainforest and supports an extraordinary diversity of aquatic life. The river sustains roughly 4,000 people who depend on it for their livelihoods through fishing, and its isolated tributaries and inner lagoons have drawn fly fishermen from around the world seeking the ultimate Amazonian angling experience. The combination of giant Peacock Bass, acrobatic Silver Arowana, hard-fighting catfish, and a host of other exotic species makes the Rio Branco one of the most compelling freshwater fishing destinations on the planet.