Phylum Chordata Bateson, 1885 - chordates
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   Subphylum Vertebrata Cuvier, 1812 - vertebrates
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     Pisces
    Count: [*] 5c58o469f; †4c41o87f
       Class Actinopterygii Woodward, 1891 - ray-finned fishes
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         Order Siluriformes Rafinesque, 1810 - catfishes
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           Family Ageneiosidae - bottlenose catfishes see Family Auchenipteridae Bleeker, 1862
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           Family Akysidae Gill, 1861 - stream catfishes
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           Family Amblycipitidae Day, 1873 - torrent catfishes
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           Family Amphiliidae Regan, 1911 - loach catfishes
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           Family †Andinichthyidae Gayet, 1988
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           Family Ariidae Bleeker, 1862 - sea catfishes
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           Family Aspredinidae Adams, 1854 - banjo catfishes
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           Family Astroblepidae Bleeker, 1862 - climbing catfishes
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           Family Auchenipteridae Bleeker, 1862 - auchenipterid catfishes
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           Family Bagridae Bleeker, 1858 - bagrid catfishes
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           Family Callichthyidae Bonaparte, 1838 - callichthyid armored catfishes
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           Family Cetopsidae Bleeker, 1858 - whalelike catfishes
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           Family Chacidae Bleeker, 1858 - squarehead catfishes
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           Family Clariidae Bonaparte, 1846 - airbreathing catfishes
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           Family Cranoglanididae Myers, 1931, nom. corr. - armorhead catfishes
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           Family Diplomystidae Eigenmann, 1890 - diplomystid catfishes
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           Family Doradidae Bleeker, 1858 - thorny catfishes
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           Family Helogeneidae - helogeneid catfishes see Subfamily Helogeneinae
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           Family Heteropneustidae - airsac catfishes
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           Family Hypophthalmidae - loweye catfishes see Family Pimelodidae Bonaparte, 1838
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           Family Ictaluridae Gill, 1861 - North American freshwater catfishes
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           Family Loricariidae Rafinesque, 1815 - suckermouth armored catfishes
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           Family Malapteruridae Bleeker, 1858 - electric catfishes
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           Family Mochokidae Jordan, 1923 - squeakers and upside-down catfishes
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           Family Olyridae - olyrid catfishes see Family Bagridae Bleeker, 1858
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           Family Pangasiidae Bleeker, 1858 - pangasid catfishes
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           Family Parakysidae - parakysid catfishes see Subfamily Parakysinae
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           Family Pimelodidae Bonaparte, 1838 - long-whiskered catfishes
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           Family Plotosidae Bleeker, 1858 - eeltail catfishes
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           Family Schilbeidae Bleeker, 1858 - schilbeid catfishes
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           Family Scoloplacidae Bailey & Baskin, 1976 - spiny dwarf catfishes
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           Family Siluridae Rafinesque, 1815 - sheatfishes
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           Family Sisoridae Bleeker, 1858 - sisorid catfishes
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           Family Trichomycteridae Bleeker, 1858 - parasitic catfishes and candirus
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