Productive fishing is found along the entire river, but specific areas gain repute. Confluences with smaller tributaries and igarapés (small streams) often create nutrient-rich zones that attract baitfish and predators. Isolated lagoons (lakes) formed within the river's floodplain are legendary hotspots, especially as water levels drop, holding concentrated populations of large peacock bass and other species. Areas with significant underwater structure, such as fallen trees, rock piles, and deep undercut banks, are always worth prospecting.