Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Craniata auct.
     Pisces
       Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020]
         Order Scorpaeniformes Bloch, 1789 - mail-cheeked fishes see Order Perciformes Bleeker, 1859
           Suborder Cottoidei Berg, 1940
             Family Rhamphocottidae Jordan & Gilbert, 1883 - horsehead sculpins
             Family Ereuniidae see Family Rhamphocottidae Jordan & Gilbert, 1883
             Family Cottidae Bonaparte, 1831 - sculpins
             Family Cottocomephoridae see Family Cottidae Bonaparte, 1831
             Family Comephoridae Bonaparte, 1850 - Baikal oilfishes see Family Cottidae Bonaparte, 1831
             Family Abyssocottidae see Subfamily Abyssocottinae
             Family Hemitripteridae see Subfamily Hemitripterinae Gill, 1865
             Family Psychrolutidae Günther, 1861 - marine sculpins
             Family Agonidae Swainson, 1839 - poachers
             Family Cyclopteridae Bonaparte, 1831 - lumpfishes
             Family Liparidae Gill, 1861, nom. cons. - snailfishes
             Family Bathylutichthyidae - Antarctic sculpins see Family Psychrolutidae Günther, 1861