fish
   Anabantiformes
   Anguilliformes
   Atheriniformes
   Characiformes
   Cichlidae
   Cypriniformes
   Cyprinodontiformes
   Gobiiformes
   Perciformes
   Siluriformes
   more
     Acipenseriformes
     Ambassidae
     Amiidae
     Arapaimidae
     Batrachoididae
     Beloniformes
     Blenniidae
     Centrarchiformes
     Dipnoi
     Engraulidae
     Esociformes
     Galaxioidea
     Gasterosteidae
     Gonorynchiformes
     Gymnotiformes
     Indostomas
     Lepisosteiformes
     Lobotiformes
     Mormyridae
     Mugilidae
     Ophidiiformes
       Bythitoidei
         Aphyonidae
         Bythitidae
           Brosmophycinae
             Beaglichthys
             Bidenichthys
             Brosmodorsalis
             Brosmolus
             Brosmophyciops
             Brosmophycis
             Brotulina
             Dermatopsis
             Dermatopsoides
             Diancistrus
             Dinematichthys
             Gunterichthys
             Lucifuga
             Melodichthys
             Monothrix
             Ogilbia
             Parabrosmolus
             Typhliasina
           Bythitinae
           Propteridium
         Parabrotulidae
       Ophidioidei
     cave
     Osteoglossidae
     Pantodontidae
     Percopsiformes
     Pleuronectiformes
     Polycentridae
     Polypteridae
     Potamotrygonidae
     Scatophagidae
     Scorpaeniformes
     Syngnathidae
     Tarumaniidae
   Synbranchiformes
inverts
plants
misc