#genus_Prosopium__Prosopium  whitefishes
  supertype:  #fish_genus  any of various genus of fish
  member of:  #family_Coregonidae
  member:  #round_whitefish__Menominee_whitefish__Prosopium_cylindraceum  bronze-backed whitefish of northern North America and Siberia
  member:  #Rocky_Mountain_whitefish__Prosopium_williamsonii  whitefish of the western United States and Canada

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