#shad  herring-like food fishes that migrate from the sea to freshwater to spawn
  supertype:  clupeid_fish  food_fish
  member of:  genus_Alosa
  subtype:  common_American_shad__Alosa_sapidissima  shad of Atlantic coast of North America; naturalized to Pacific coast
  subtype:  river_shad__rivershad__alosachrysoclori  shad that spawns in streams of the Mississippi drainage; very similar to Alosa sapidissima
  subtype:  allice_shad__allis_shad__allisshad__allice__allis__alli__Alosa_alosa  European shad

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