fish
   Anabantiformes
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     Ambassidae
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     Esociformes
     Galaxioidea
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     Ophidiiformes
       Bythitoidei
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         Carapidae
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           Brotulinae
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           Neobythitinae
             Abyssobrotula
             Acanthonus
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             Apagesoma
             Barathrites
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             Benthocometes
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             Epetriodus
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             Glyptophidium
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             Selachophidium
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             Xyelacyba
           Ophidiinae
     Osteoglossidae
     Pantodontidae
     Percopsiformes
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     Polycentridae
     Polypteridae
     Potamotrygonidae
     Scatophagidae
     Scorpaeniformes
     Syngnathidae
     Tarumaniidae
     cave
inverts
plants
misc