Rio Garaú is a river located in the state of Paraíba, Brazil, flowing through a region characterized by the diverse coastal and estuarine environments typical of northeastern Brazil. The river sits within a broader network of waterways that includes well-known fishing destinations such as Rio Gramame, Rio Paraíba, and Rio Mamuaba, placing it in a productive coastal fishing corridor. Its proximity to the Atlantic coast gives it an estuarine character, making it home to a mix of marine, brackish, and freshwater species that move through its waters depending on tidal influence and seasonal conditions.