three-spined stickleback

Thesaurus

Noun

1.

three-spined stickleback - of rivers and coastal regions Gasterosteus aculeatusstickleback, prickleback - small (2-4 inches) pugnacious mostly scaleless spiny-backed fishes of northern fresh and littoral waters having elaborate courtship; subjects of much researchGasterosteus, genus gasterosteus - type genus of the family Gasterosteidae