fish
   Anabantiformes
   Anguilliformes
   Atheriniformes
   Characiformes
     Alestoidea
     Anostomoidea
     Characoidea
       Acestrorhynchidae
       Bryconidae
       Chalceidae
       Characidae
         Aphyocharacinae
         Aphyoditeinae
         Brachychalcinus
         Characinae
         Cheirodontinae
         Exodontinae
         Gymnocharacinae
         Jupiaba
         Stethaprioninae
           Andromakhe
           Astyanax
           Brittanichthys
           Bryconella
           Ctenobrycon
           Ectrepopterus
             uruguayensis
           Gymnocharacinus
           Gymnocorymbus
           Hasemania
           Hemigrammus
           Hyphessobrycon
           Inpaichthys
           Moenkhausia
           Nematocharax
           Oligosarcus
           Orthospinus
           Paracheirodon
           Petitella
           Pristella
           Psalidodon
           Pseudochalceus
           Rhoadsia
           Thayeria
         Stevardiinae
         Tetragonopterinae
         misc
       Crenuchidae
       Ctenoluciidae
       Gasteropelecidae
       Hepsetidae
       Iguanodectidae
       Lebiasinidae
       Parodontidae
       Triportheidae
     Citharinoidei
     Curimatoidea
     Erythrinoidea
   Cichlidae
   Cypriniformes
   Cyprinodontiformes
   Gobiiformes
   Perciformes
   Siluriformes
   Synbranchiformes
   more
inverts
plants
misc