Fishes
   Class Actinopterygii Woodward, 1891 - ray-finned fishes
     Order Ophidiiformes Rafinesque, 1810 - cusk-eels
       Family Ophidiidae Jordan & Evermann, 1898 - cuskeels
         1 Subfamily Brotulinae Swainson, 1838
         2 Subfamily Brotulotaeniinae
         3 Subfamily Ophidiinae Rafinesque, 1810
         4 Subfamily Neobythitinae Radcliffe, 1913