Class Actinopterygii Woodward, 1891 - ray-finned fishes
   Subclass Neopterygii Regan, 1923
     Infraclass Teleostei Müller, 1845
       Supercohort Teleocephala de Pinna, 1996
         Clupeocephala
           Cohort Euteleosteomorpha (Greenwood et al., 1966)
             Subcohort Neoteleostei Nelson, 1969
               Infracohort Eurypterygia (Rosen, 1973)
                 Section Ctenosquamata Rosen, 1973
                   Subsection Acanthomorphata (Rosen, 1973)
                     Euacanthomorpha (Johnson & Patterson, 1993)
                       Holacanthopterygii Johnson & Patterson, 1993
                         Acanthopterygii Rosen & Patterson, 1969
                           Euacanthopterygii
                             Division Percomorphacea Wiley & Johnson, 2010
                               Order Cottiformes
                                 Suborder Zoarcoidei
                                   1 Family Zoarcidae - eelpouts
                                   2 Family Bathymasteridae - ronquils
                                   3 Family Stichaeidae - pricklebacks
                                   4 Family Cryptacanthodidae - wrymouths
                                   5 Family Pholididae
                                   6 Family Anarhichadidae - wolffishes
                                   7 Family Ptilichthyidae - quillfishes
                                   8 Family Zaproridae Jordan, 1896 - prowfishes
                                   9 Family Scytalinidae - graveldivers