The most productive areas are consistently found along structural features. Deep pools near the confluence with larger rivers are prime locations. Undercut clay banks and rocky outcrops provide ambush points. Areas with significant accumulations of submerged wood, such as fallen trees and logjams, hold large numbers of baitfish and attract predators. The mouths of smaller tributaries flowing into the main Igarapé are also excellent spots, especially on outgoing tides or currents.