Rio do Peixe is a medium-sized river in the northwestern region of Goiás, Brazil, flowing as one of the most fish-rich tributaries of the Araguaia river system. True to its name — "Fish River" — it earns its reputation as a productive and rewarding destination for anglers seeking an alternative to the busier main Araguaia corridor. The river originates in the cerrado (Brazilian savanna) and maintains relatively clear water even during the rainy season, a characteristic that makes it particularly well-suited for fishing with artificial lures. Located near the towns of Araguapaz and Aruanã, approximately 315–320 km from Goiânia (roughly a 4-hour drive), Rio do Peixe offers a more peaceful and intimate fishing experience compared to the heavily trafficked main Araguaia. Local residents are deeply familiar with the best fishing spots and regularly guide visiting anglers through the river's most productive stretches.