This river is one of the main drainage routes of the Ciénaga de Zapata with depths that oscillate around 4 meters and a length of 29 km, in general it is formed by three tributaries: Río Negro, Guareira and Gonzalo that give rise to the Hatiguanico River , this is located at the western end of the Zapata Swamp and pours its waters to the Ensenada de la Broa.

On the banks of these rivers, very well preserved swamp and mangrove forests grow. The terrestrial fauna is conformed mainly by aquatic birds and in the navy stand out in the fish the Sábalos, Róbalos and Cuberas.

The sport fishing activity consists of the method of capture and release of the aforementioned species, with fishing gear fitted to avoid damaging them, the carrying capacity of the area is 4 fishermen per day and the fishing area includes only the Hatiguanico River and its tributaries Río Negro, Guareira and Gonzalo. For its realization, small boats propelled by outboard engines and the use of specialized guides in sport fishing are used.