Rio Corumbá is a significant river flowing through the state of Goiás, Brazil, draining into the right bank of the Paranaíba River as part of the upper Paraná River basin. This waterway is a richly biodiverse fishery, home to an extraordinary variety of tropical species, including several fish endemic to the Corumbá River basin itself. The river feeds the Corumbá Reservoir, a major impoundment that has been extensively studied for its fish assemblage and trophic dynamics. With 119 fish species documented across seven orders, 26 families, and 78 genera — including 17 species potentially new to science — Rio Corumbá stands out as one of the more ecologically complex and rewarding fishing destinations in central Brazil.