Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Class Osteichthyes Huxley, 1880 [paraphyletic] - bony fishes see [unranked] Euteleostomi
         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 see Infraclass Teleostei Müller, 1845
               Subdivision Euteleostei Greenwood et al., 1966 see Cohort Euteleosteomorpha (Greenwood et al., 1966)
                 Superorder Ostariophysi Jordan & Evermann, 1896 see Subcohort Ostariophysi Sagemehl, 1885
                   Order Siluriformes Rafinesque, 1810 - catfishes
                     Family Trichomycteridae Bleeker, 1858 - parasitic catfishes and candirus