Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Teleostomi Bonaparte, 1836
       Class Osteichthyes Huxley, 1880 [paraphyletic] - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
         Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
           Infraclass Neopterygii Regan, 1923 see Subclass Neopterygii Regan, 1923
             Division Teleostei Müller, 1845
               Subdivision Euteleostei Greenwood et al., 1966 see Cohort Euteleostei Greenwood et al., 1966
                 Superorder Ostariophysi Sagemehl, 1885
                   Order Siluriformes Bleeker, 1858 - catfishes
                     01 Family Diplomystidae Eigenmann, 1890 - diplomystid catfishes
                     02 Family Ictaluridae Gill, 1861 - North American freshwater catfishes
                     03 Family Bagridae Bleeker, 1858 - bagrid catfishes
                     04 Family Craniglanidae Carroll, 1988, nom. null. see Family Cranoglanididae Myers, 1931
                     05 Family Siluridae Rafinesque, 1815 - sheatfishes
                     06.1 Family Schilbidae Bleeker, 1858 see Family Schilbeidae Bleeker, 1858
                     06.2 Family Pangasiidae Bleeker, 1858 - pangasid catfishes
                     07 Family Amblycipitidae Day, 1873 - torrent catfishes
                     08 Family Amphiliidae Regan, 1911 - loach catfishes
                     09 Family Akysidae Gill, 1861 - stream catfishes
                     10 Family Sisoridae Bleeker, 1858 - sisorid catfishes
                     11 Family Clariidae Bonaparte, 1845 - airbreathing catfishes
                     12 Family Heteropneustidae Hora, 1936 - airsac catfishes
                     13 Family Chacidae Bleeker, 1858 - squarehead catfishes
                     14 Family Olyridae - olyrid catfishes see Family Bagridae Bleeker, 1858
                     15 Family Malapteruridae Bleeker, 1858 - electric catfishes
                     16 Family Mochokidae Regan, 1912 - squeakers and upside-down catfishes
                     17 Family Arriidae see Family Ariidae Bleeker, 1858
                     18 Family Doradidae Bleeker, 1858 - thorny catfishes
                     19 Family Auchenipteridae Bleeker, 1862 - intromittant catfishes
                     20 Family Aspredinidae Adams, 1854 - banjo catfishes
                     21 Family Plotosidae Bleeker, 1858 - eeltail catfishes
                     22 Family Pimelodontidae see Family Pimelodidae Bonaparte, 1835
                     23 Family Ageneiosidae - bottlenose catfishes see Subfamily Auchenipterinae Bleeker, 1862
                     24 Family Hypopthalmidae see Family Hypophthalmidae
                     25 Family Helogeneidae - helogeneid catfishes see Subfamily Helogeneinae
                     26 Family Cetopsidae Bleeker, 1858 - cetopsid catfishes
                     27 Family Stegophilidae see Subfamily Stegophilinae Günther, 1864
                     28 Family Trichomycteridae Bleeker, 1858 - pencil catfishes
                     29 Family Callichthyidae Bonaparte, 1835 - callichthyid armored catfishes
                     30 Family Loricariidae Rafinesque, 1815 - suckermouth armored catfishes