The Rio Jaguaribe is one of the most significant rivers in northeastern Brazil, stretching approximately 633 kilometers through the semi-arid landscape of Ceará state. As the longest river entirely within Ceará, it flows through a diverse range of environments — from its headwaters in the interior to its lower reaches near the Atlantic coast — supporting a variety of fishing opportunities along its course. The river has long been a vital resource for local communities, serving not only as a fishery but also as a source of water for agriculture, livestock, and aquaculture. Numerous dams have been constructed along its length to combat the region's periodic droughts, creating a patchwork of reservoirs, flowing reaches, and estuarine zones that each offer distinct angling experiences.