Río Rucué is a river located in the Biobío Region of south-central Chile, flowing through a landscape characteristic of the Mediterranean-influenced river systems of this part of the country. The river is recognized in scientific literature as a rithron-type system — a fast-flowing, well-oxygenated watercourse with the physical and ecological characteristics typical of upland Chilean streams. Its waters support both native and introduced fish species, and the river has been the subject of ichthyological and macroinvertebrate research that sheds light on its ecological richness. For anglers, Río Rucué offers an experience rooted in the wild, relatively undisturbed character of south-central Chilean river fishing, set against the region's distinctive riparian and montane scenery.