Guaporé River

The Guaporé River flows through western Brazil and northeastern Bolivia. It is 1,260 kilometers (780 miles) long, with 920 kilometers (570 miles) forming the border between Brazil and Bolivia.

The Guaporé River is part of the Madeira River basin, which flows into the Amazon River. The Guaporé River runs through the eastern part of the Beni savanna. It borders the Guaporé Biological Reserve, which covers 615,771 hectares (1,521,600 acres), and is fed by rivers that originate in the reserve, including the São Miguel, Branco, São Simão, Massaco, and Colorado.

The Guaporé River basin is home to approximately 260 fish species, 25 of which are endemic. While many of the river's fish species are essentially Amazonian, the Guaporé's fauna is also linked to the Paraguay River (part of the Río de la Plata Basin). While the Guaporé and the Paraguay flow in opposite directions, they both originate in Brazil's Parecis plateau. Among the fish species shared by these rivers are the black phantom tetra (popular in aquariums) and golden dorado (important in fisheries).

Length: 1,260 km (780 mi- shared with Brazil)