Productive areas are typically associated with structure and transitions in the aquatic environment. Key spots include the confluence areas where smaller streams or igarapés meet the main river, the mouths of lagoons like Lago Curimatá, and along banks with submerged logs, overhanging vegetation, or lily pads. In the lake environment, focusing on drop-offs, channels, and areas with floating vegetation can yield good results. Fish often hold near structure that provides ambush points and access to surface prey.