"[Pisces]"
   Class Actinopterygii Woodward, 1891 - ray-finned fishes
     Order Ophidiiformes Rafinesque, 1810 - cusk-eels
       Family Bythitidae Gill, 1861 - livebearing brotulas
         1 Subfamily Bythitinae Gill, 1861
         2 Subfamily Brosmophycinae Gill, 1862