Rio Rolante is a river flowing through the Serra Gaúcha region of Rio Grande do Sul, Brazil, winding through a landscape characterized by Atlantic Forest vegetation, rolling hills, and the diverse aquatic ecosystems typical of southern Brazil's river systems. The river draws anglers from the surrounding region seeking a mix of native and introduced species in a setting that combines accessible stretches with more remote, forested reaches. Its waters support a variety of warmwater species that thrive in the subtropical climate of Rio Grande do Sul, making it a productive destination throughout much of the year.