[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 Scorpaeniformes Bloch, 1789 - mail-cheeked fishes see Order Perciformes Bleeker, 1859
         Family Agonidae Swainson, 1839 - poachers
           Genus Ulcina Cramer, 1896 see Genus Aspidophoroides Lacepède, 1801
             1 Ulcina olriki (Lütken, 1876), orth. inval. - Arctic alligatorfish see Ulcina olrikii (Lütken, 1876)