Rio Ipiranga is a stream flowing through Paraná, Brazil, situated at approximately 25°25′S, 48°54′W in the Atlantic Forest region of the state. This small waterway offers a relaxed freshwater fishing experience typical of the subtropical lowland streams of coastal Paraná, where dense riparian vegetation lines the banks and the water supports a mix of native and introduced fish species. Its intimate scale makes it well-suited for light tackle and exploratory fishing, and its proximity to other notable waters in the region — including Represa Piraquara and Rio Cachoeira — makes it a worthwhile stop for anglers exploring the broader watershed.