66161 Baryancistrus xanthellus Rapp Py-Daniel, Zuanon & Ribeiro de Oliveira, 2011 Loricariidae Armored catfishes Hypostominae Siluriformes Teleostei South America: Volta Grande do rio Xingu, an area immediately above Belo Monte falls, and rio Iriri, the larger tributary of rio Xingu in Brazil. INPA 33849 3 S 51 W 1997 Baryancistrus xanthellus