Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
     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
           Family Agonidae Swainson, 1839 - poachers
           Family Anoplopomatidae Jordan & Gilbert, 1883 - sablefishes
           Family Aploactinidae Jordan & Starks, 1904 - velvetfishes see Subfamily Aploactininae Jordan & Starks, 1904
           Family Bathylutichthyidae - Antarctic sculpins see Family Psychrolutidae Günther, 1861
           Family Bembridae Kaup, 1873 - deepwater flatheads
           Family Caracanthidae Gill, 1885 - coral crouchers see Subfamily Caracanthinae Gill, 1885
           Family Comephoridae Bonaparte, 1850 - Baikal oilfishes see Family Cottidae Bonaparte, 1831
           Family Congiopodidae Gill, 1889 - racehorses
           Family Cottidae Bonaparte, 1831 - sculpins
           Family Cottocomephoridae see Family Cottidae Bonaparte, 1831
           Family Cyclopteridae Bonaparte, 1831 - lumpfishes
           Family Dactylopteridae Gill, 1861 - helmet gurnards
           Family Ereuniidae see Family Rhamphocottidae Jordan & Gilbert, 1883
           Family Gnathanacanthidae Gill, 1892 - red velvetfishes see Subfamily Gnathanacanthinae Gill, 1892
           Family Hexagrammidae Jordan, 1888 - greenlings
           Family Hoplichthyidae Kaup, 1873 - spiny flatheads
           Family Normanichthyidae Clark, 1937 - barehead scorpionfishes
           Family Pataecidae Gill, 1872 - Australian prowfishes see Subfamily Pataecinae Gill, 1872
           Family Platycephalidae Swainson, 1839 - flatheads
           Family Psychrolutidae Günther, 1861 - marine sculpins
           Family Scorpaenidae Risso, 1827 - scorpionfishes
           Family Triglidae Rafinesque, 1815 - searobins