Productive areas are consistently found where there is a confluence of food and cover. Key spots include the mouths of smaller tributaries and igarapés (small streams) flowing into the main river, which funnel baitfish. Areas with significant submerged timber, fallen trees, and undercut banks provide ambush points for peacock bass and catfish. The deeper pools and channels, especially near bends in the river, hold larger predatory species like surubim and payara.