Fishing in Tocantins

Tocantins sits in central Brazil, straddling the transition between the Amazon basin and the cerrado.

It's a state defined by big rivers — the kind that run wide and fast in the wet season, then drop to expose rocky shelves and clear channels as the dry sets in.

The fishing here is almost entirely freshwater, and the two rivers that shape the scene are the Rio Tocantins and the Rio Araguaia. The Rio Tocantins is the spine of the state.

It runs through a mix of fast and slow water, with rocky stretches that hold payara — locally called cachorra — alongside sardinata (apapá) and bicuda. These are aggressive, fast-water predators, and the rocky runs suit them well.

Fly fishing is viable here, and guides run aluminum jon boats to navigate the currents and the uneven bottom.

The town of Peixe, in the south of the state, sits on the Tocantins and has its own story: in an unusually high flood year, a large fish was trapped in a nearby lagoon when the water dropped, and the place has been called Peixe — fish — ever since.

The Lago do Peixe, a protected lake near the town, is where the tucunaré-azul (blue peacock bass) fishing centers. That lake produced the world record for the species: a fish of 4. 99 kg and 64 cm.

The azul doesn't reach the size of the tucunaré-açu, but it fights hard and the average fish runs 30 to 50 cm.

The Rio Araguaia forms the western border of the state and carries its own healthy populations of peacock bass, payara, and other species from the Tocantins-Araguaia basin.

Scientific surveys of the rapids throughout the basin have recorded over 100 species, including 11 under some level of threat — a reminder that this is not just productive water, but ecologically significant water.

The construction of hydroelectric dams over the past four decades has altered the system considerably, and some rapids-dwelling species have contracted their ranges. That context matters when you're planning a trip here. Timing follows the river.

April and November are cited as productive windows for payara, sardinata, and bicuda on the Tocantins, when water levels and clarity align. The wet season pushes fish into flooded margins; the dry concentrates them.

Most guided operations base out of Palmas, the state capital, and drive several hours to reach the fishing. The species list here — payara, bicuda, sardinata, tucunaré-azul, tucunaré-açu — won't overlap much with what most visiting anglers have caught before.

That's the draw. The Rio Tocantins and Lago do Peixe are the places to start asking questions.