Inter 40 et 50 (vide textum)
Anas est genus avium aquaticarum familiae Anatidarum , quod inter quadraginta et quinquaginta species comprehendit, quarum notissima est Anas platyrhynchos . In decem fere subgenera dividitur, quae a nonnullis eruditis genera distincta habentur.
Hae sunt species ab ITIS acceptae:
Anas acuta Linnaeus, 1758Anas americana Gmelin, 1789Anas aucklandica (G. R. Gray, 1844)Anas bahamensis Linnaeus, 1758Anas bernieri (Hartlaub, 1860)Anas capensis Gmelin, 1789Anas castanea (Eyton, 1838)Anas chlorotis G. R. Gray, 1845Anas clypeata Linnaeus, 1758Anas crecca Linnaeus, 1758Anas cyanoptera Vieillot, 1816Anas discors Linnaeus, 1766Anas eatoni (Sharpe, 1875)Anas erythrorhyncha Gmelin, 1789Anas falcata Georgi, 1775Anas flavirostris Vieillot, 1816Anas formosa Georgi, 1775Anas fulvigula Ridgway, 1874Anas georgica Gmelin, 1789Anas gibberifrons S. Muller, 1842Anas gracilis Buller, 1869Anas hottentota (Eyton, 1838)Anas laysanensis Rothschild, 1892Anas luzonica Fraser, 1839Anas melleri P. L. Sclater, 1865Anas nesiotis (J. H. Fleming, 1935)Anas penelope Linnaeus, 1758Anas platalea Vieillot, 1816Anas platyrhynchos Linnaeus, 1758Anas poecilorhyncha J. R. Forster, 1781Anas puna Tschudi, 1844Anas querquedula Linnaeus, 1758Anas rhynchotis Latham, 1802Anas rubripes Brewster, 1902Anas sibilatrix Poeppig, 1829Anas smithii (Hartert, 1891)Anas sparsa Eyton, 1838Anas strepera Linnaeus, 1758Anas superciliosa Gmelin, 1789Anas undulata C. F. Dubois, 1839Anas versicolor Vieillot, 1816Anas wyvilliana P. L. Sclater, 1878Nexus interni