#young_fish__youngfish  a fish that is young
  supertype:  #offspring__young  any immature animal
  subtype:  #parr  the young of various fishes
  subtype:  #whitebait  the edible young of especially herrings and sprats and smelts
  subtype:  #britt__brit  the young of a herring or sprat or similar fish
  subtype:  #parr.young_fish  a young salmon up to 2 years old

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