Fishing in Anavilhanas National Park

Anavilhanas sits on the Rio Negro roughly 100 kilometers upstream from Manaus, in the state of Amazonas.

The park covers 350,470 hectares of blackwater river, flooded forest, and open channels threading between more than 400 islands that stretch about 130 kilometers along the river.

About 60 percent of the park is water, and that proportion shifts dramatically with the seasons — during high water, the igapó forests flood and the entire landscape reorganizes itself around the pulse of the Amazon basin.

The Rio Negro is the spine of the park and the primary fishing water. Its dark, tannin-stained water runs through the archipelago's main channels and opens into roughly 60 lakes scattered among the islands.

The igarapés — Araçari, Pidiuaú, Sucuriju, Ipiranga, Açu, Arara, Lago Azul, and Caiau among them — feed into the main river and offer narrower, more sheltered water.

The Rio Apuaú, Rio Puduari, and Rio Cuieiras drain into the Rio Negro within or near the park's boundaries and carry their own character.

Piranha are the most commonly targeted species here, and the technique is straightforward: a cane pole, diced red meat for bait, and a slap of the pole on the surface to draw fish up from below.

During high water, you fish among the flooded treetops, where schools hold in the submerged canopy. Catfish are also present in the channels.

The flood pulse governs everything — high water pushes fish into the forest, low water concentrates them in lakes and deeper river sections, exposing sandbars and making navigation more predictable. Access to the park runs through Novo Airão.

Small fishing boats work the channels throughout the archipelago. Artisanal fishing has a long presence here, and local fishermen still work the waters around the park's edges.

Anavilhanas is managed by the Chico Mendes Institute for Biodiversity Conservation (ICMBio), and it carries full national park protections as part of the Central Amazon Conservation Complex UNESCO World Heritage Site.

Check directly with ICMBio or the park administration in Novo Airão for current fishing rules before you go — regulations in a park of this designation can differ meaningfully from what applies on the Rio Negro outside its boundaries.

The water here is not a backdrop. It is the park.

Everything that lives in Anavilhanas — the boto surfacing in the channels, the giant otters working the lake edges, the fish moving in and out of the forest — runs on the same seasonal clock you'll be fishing against.