Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
     Pisces
       Class Actinopterygii Woodward, 1891 - ray-finned fishes
         Order Lampriformes - opahs see Order Lampridiformes Goodrich, 1909, orth. inval.
           1 Family Lampridae - opahs see Family Lamprididae orth. inval.
           2 Family Veliferidae Bleeker, 1859 - velifers
           3 Family Lophotidae - crestfishes
           4 Family Radiicephalidae - tapertails
           5 Family Trachipteridae - ribbonfishes
           6 Family Regalecidae - oarfishes
           7 Family Stylephoridae - tube-eyes