Lagoa Dos Cajueiros is a lagoon located in the state of Piauí, in northeastern Brazil. Piauí is characterized by its semi-arid climate and diverse aquatic environments, and lagoons like this one are typical features of the region's landscape, often formed by seasonal rainfall patterns and the drainage systems of the cerrado and caatinga biomes. These water bodies serve as important refuges for freshwater fish and wildlife, particularly during drier periods when water becomes concentrated and fish populations become more accessible to local anglers.