Rubafo

Habitat Distribution

• Native to Brazil; found across the middle and lower Amazon basin, including the Rios Trombetas, Jari, Tapajós, Xingu, and Tocantins drainages.
• Also present in the coastal rivers of Amapá state — the Rios Araguari and Amapá — and in the state's two major conservation units near the Iratapuru River and Tumucumaque Mountains National Park.
• A bottom-oriented, potamodromous species (moves within river systems rather than to the sea) that favors slow to moderate freshwater — main-river eddies, creek mouths, and flooded forest margins.

Key Locations

• Rio Trombetas, Pará — a major Amazon tributary with documented rubafo populations in its counter-current eddies.
• Rio Jari, on the Amapá–Pará border — part of the species' core range in the lower Amazon system.
• Rio Tapajós and Rio Xingu, Pará — both blackwater and clearwater tributaries where the species is present.
• Rio Tocantins drainage — another confirmed part of the Brazilian range, accessible from several points in Pará and Tocantins states.
• Coastal rivers of Amapá state, including the Rios Araguari and Amapá — less-fished drainages where the species is native.

Specific Spots

• Counter-current zones on the downstream side of points, fallen timber, and large boulders — the fish hold here to intercept prey swept past by the main flow.
• Shaded undercut banks and submerged root tangles in creeks and tributaries, especially where overhanging vegetation drops insects and small animals into the water.
• Creek mouths and backwater lagoons connected to the main river, where slower water concentrates baitfish and the rubafo can pin prey against a hard edge.