stickleback

1. Small (2-4 inches) pugnacious mostly scaleless spiny-backed fishes of northern fresh and littoral waters having elaborate courtship;
   Subjects of much research (synset 101457497)
   is a type of: acanthopterygian, spiny-finned fish - a teleost fish with fins that are supported by sharp inflexible rays
   subtypes:

   • gasterosteus aculeatus, three-spined stickleback - of rivers and coastal regions
   • gasterosteus pungitius, ten-spined stickleback - confined to rivers
   belongs to: family gasterosteidae, gasterosteidae - sticklebacks
   same as: prickleback

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