Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Pisces Class Actinopterygii Woodward, 1891 - ray-finned fishes Order Scorpaeniformes Bloch, 1789 - mail-cheeked fishes Family Agonidae Swainson, 1839 - poachers Family Anoplopomatidae - sablefishes and skilfishes Family Aploactinidae - velvetfishes Family Bathylutichthyidae Family Bembridae - deepwater flatheads Family Caracanthidae - coral crouchers Family Comephoridae - Baikal oilfishes Family Congiopodidae - horsefishes Family Cottidae Bonaparte, 1832 - sculpins Family Cottocomephoridae see Family Cottidae Bonaparte, 1832 Family Cyclopteridae Family Dactylopteridae - helmet gurnards Family Ereuniidae Family Gnathanacanthidae - red velvetfishes Family Hexagrammidae Family Hoplichthyidae - spiny flatheads Family Normanichthyidae Family Pataecidae - prowfishes Family Platycephalidae - flatheads Family Psychrolutidae - fatheads Family Scorpaenidae Jordan & Evermann, 1898 - scorpionfishes Family Triglidae Rafinesque, 1815 - searobins