Fishes
   Class Actinopterygii Woodward, 1891 - ray-finned fishes
     Order Ophidiiformes Rafinesque, 1810 - cusk-eels
       1 Family Ophidiidae Jordan & Evermann, 1898 - cuskeels
       2 Family Carapidae Jordan & Fowler, 1902 - pearlfishes
       3 Family Bythitidae Gill, 1861 - livebearing brotulas
       4 Family Aphyonidae - aphyonids
       5 Family Parabrotulidae - false brotulas