[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 Ophidiiformes Regan, 1912 - cusk-eels
         1 Family Ophidiidae Rafinesque, 1810 - cusk-eels
         2 Family Carapidae Poey, 1867, nom. protect., nom. praeval. - pearlfishes
         3 Family Bythitidae Gill, 1861 - viviparous brotulas
         4 Family Aphyonidae Jordan & Evermann, 1898 - aphyonids see Family Bythitidae Gill, 1861
         5 Family Parabrotulidae Nielsen, 1968 - false brotulas see Family Bythitidae Gill, 1861