51396 Hemiodus argenteus Pellegrin, 1909 Hemiodontidae Halftooths Characiformes Teleostei South America: Orinoco River basin; Japurá, Jutai, Negro, Tapajós, and Uatumã River basins; Rupununi, Corantijn, Itapecuru, and Mearim River basins. FB 2737716 Hemiodopsis ocellata