#eel  voracious snakelike marine or freshwater fishes with smooth slimy usually scaleless skin and having a continuous vertical fin but no ventral fins
  supertype:  #soft-finned_fish__malacopterygian  any fish of the superorder Malacopterygii
  subtype:  #elver  #common_eel  #Anguilla_sucklandii  #moray_eel  #conger_eel
  member of:  #order_Anguilliformes__Anguilliformes__order_Apodes  elongate fishes with pelvic fins and girdle absent or reduced
     member of:  #superorder_Malacopterygii__Malacopterygii  an extensive group of teleost fishes having fins supported by flexible cartilaginous rays
        member of:  #subclass_Teleostei__Teleostei  large diverse group of bony fishes; includes most living species
           member of:  #class_Osteichthyes__Osteichthyes  a class of fish having a skeleton composed of bone in addition to cartilage
              member of:  #subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
                 member of:  #phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                    member of:  #kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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