#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
  supertype:  #spiny-finned_fish__acanthopterygian  a teleost fish with fins that are supported by sharp inflexible rays
  member of:  #family_Gasterosteidae
  subtype:  #three-spined_stickleback__Gasterosteus_aculeatus  of rivers and coastal regions
  subtype:  #ten-spined_stickleback__Gasterosteus_pungitius  confined to rivers

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