Rio Negro

Boat Ramps: 0
Access Points: 0
Species: 0

The Rio Negro is a significant tributary of the Tocantins River, flowing through the state of Tocantins in central Brazil. It is a major river system within the vast Tocantins-Araguaia basin, characterized by its dark, tannin-stained waters, which is typical of rivers draining tropical forest regions. The river supports a diverse and unique freshwater fishery, distinct from the clearwater and whitewater rivers of the Amazon, and is a premier destination for anglers seeking powerful tropical sportfish.

Species & education

Learn what type of fish are at Rio Negro and what's needed to catch them.

No species information available.

Fishing spots, boat ramps & amenities

Learn how to get on Rio Negro. Uncover great fishing access points, boat ramps, and all the facilities you need for an unforgettable day on the water. Some locations shown may border or include private property. Always check property boundaries and applicable regulations before visiting. onWater's Public & Private Land layer can help you plan your access with confidence.

Fishing success is intensely seasonal, dictated by the annual flood pulse of the Amazon basin. The low-water season (roughly July to November) is considered the peak period for angling. As water levels drop, fish become concentrated in the main river channels, remaining lagoons, and around structure, making them much easier to locate and target. The high-water season (December to June) sees the river overflow its banks, flooding the surrounding forest. Fish disperse into the flooded vegetation, making them difficult to reach from a boat, and fishing pressure typically decreases.

Know where you can legally fish on Rio Negro

See public and private land boundaries along the water, turn on private parcels with owner details to know where permission is required, and find land-trust parcels that offer permitted fishing access.

Tocantins licenses and regulations

No licenses or regulations available for Tocantins.

Take Rio Negro with you

The onWater Fish app keeps this water's access points, species and conditions in your pocket, with the tools you use once you're there.

Use the map without signal
Download the map around Rio Negro to use it offline when coverage drops.
Log your catches here
Keep a private fishing journal for Rio Negro to find where and when fish are biting for you.

Get the onWater Fish app

Free on iOS and Android