The Rio São Francisco is one of Brazil's major rivers, stretching over 2,914 kilometers through the country's interior. In the state of Paraná, this significant waterway supports diverse aquatic life and is a focal point for both recreational and subsistence fishing. The river's vast basin includes productive stretches, such as the famed Pirapora rapids, which are historically important for local communities. Fishing is a vital activity for the many riverine and indigenous communities established along its banks.