Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Chordata Bateson, 1885 - chordates
     Class Actinopterygii Woodward, 1891 - ray-finned fishes
       Order Cypriniformes Rafinesque, 1810 - carps
         Family Catostomidae - suckers
           Genus Catostomus Lesueur, 1817
             Catostomus conchos Meek, 1902 - Matalote Conchos see Catostomus bernardini Girard, 1856
             Catostomus leopoldi Siebert & Minckley, 1986 - Bavispe sucker
             Catostomus microps Rutter, 1908 - Modoc sucker
             Catostomus santaanae (Snyder, 1908) - Santa Ana sucker
             Catostomus snyderi Gilbert, 1898 - Klamath largescale sucker
             Catostomus warnerensis Snyder, 1908 - Warner sucker
             Catostomus wigginsi Herre & Brock, 1936 - Opata sucker