three-spined stickleback

/θri ˌstɪkəlˈbæk/
IPA guide

Definitions of three-spined stickleback
  1. noun
    of rivers and coastal regions
    synonyms: Gasterosteus aculeatus
    see moresee less
    type of:
    prickleback, stickleback
    small (2-4 inches) pugnacious mostly scaleless spiny-backed fishes of northern fresh and littoral waters having elaborate courtship; subjects of much research
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