#family_Gasterosteidae__Gasterosteidae  sticklebacks
  supertype:  fish_family  any of various families of fish
  member of:  order_Solenichthyes
  member:  stickleback__prickleback  small (2-4 inches) pugnacious mostly scaleless spiny-backed fishes of northern fresh and littoral waters having elaborate courtship; subjects of much research
  member:  Gasterosteus__genus_gasterosteus  type genus of the family Gasterosteidae
     member:  three-spined_stickleback__Gasterosteus_aculeatus  of rivers and coastal regions
     member:  ten-spined_stickleback__Gasterosteus_pungitius  confined to rivers

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