#three-spined_stickleback__Gasterosteus_aculeatus  of rivers and coastal regions
  supertype:  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 of:  Gasterosteus__genus_gasterosteus  type genus of the family Gasterosteidae
     member of:  family_Gasterosteidae__Gasterosteidae  sticklebacks
        member of:  order_Solenichthyes__Solenichthyes  bellows fishes; shrimpfishes; cornetfishes; pipefishes; small order of chiefly tropical marine fishes of varied and bizarre form all having a small mouth at the end of a drawn-out tubular snout
           member of:  subclass_Teleostei__Teleostei  large diverse group of bony fishes; includes most living species
              member of:  class_Osteichthyes__Osteichthyes  a class of fish having a skeleton composed of bone in addition to cartilage
                 member of:  subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
                    member of:  phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                       member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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