- 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
--1 is a kind of spiny-finned fish, acanthopterygian
--1 is a member of Gasterosteidae, family Gasterosteidae
--1 has particulars:three-spined stickleback, Gasterosteus aculeatus; ten-spined stickleback, Gasterosteus pungitius