living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
               Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
                 Order Siluriformes Rafinesque, 1810 - catfishes
                   Family Loricariidae Rafinesque, 1815 - suckermouth armored catfishes
                     1 Genus Hypostomus Lacepède, 1803
                     2 Genus Loricaria Linnaeus, 1758
                     3 Genus Otocinclus Cope, 1871
                     4 Genus Ancistris see Genus Ancistrus Kner, 1854
                     5 Genus Farlowella Eigenmann & Eigenmann, 1889
                     6 Genus Xenocara Regan, 1904 see Genus Ancistrus Kner, 1854