#family_Percidae__Percidae  active freshwater fishes; true perches and pike perches
  supertype:  #fish_family  any of various families of fish
  member of:  #order_Perciformes
  member:  #perch_flesh__perch  spiny-finned freshwater food and game fishes
  member:  #genus_Perca__Perca  type genus of the Percidae
     member:  #yellow_perch__Perca_flavescens  North American perch
     member:  #European_perch__Perca_fluviatilis  a perch native to Europe
  member:  #genus_Stizostedion__Stizostedion  pikeperches
     member:  #pikeperch__pike_perch  any of several pike-like fishes of the perch family
  member:  #genus_Percina__Percina  a genus of Percidae
     member:  #snail_darter__snaildarter__Percina_tanasi  3-inch snail-eating perch of the Tennessee River

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