[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
       Order Osmeriformes Regan, 1913 - freshwater smelts
         Family Opisthoproctidae Schmidt, 1918 - spookfishes
           Genus Opisthoproctus Vaillant, 1888
             1 Opisthoproctus grimaldii Zugmayer, 1911 - barreleye
             2 Opisthoproctus soleatus Vaillant, 1888 - barreleye