1. Small (2-4 inches) pugnacious mostly scaleless spiny-backed fishes of northern fresh and littoral waters having elaborate courtship; subjects of much research
   - prickleback

Derived forms: sticklebacks

Type of: acanthopterygian, spiny-finned fish

Part of: family Gasterosteidae, Gasterosteidae

Encyclopedia: Stickleback

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• sextet
• sextette
• sextile
• sextillion
• sextodecimo
• sexton
• sextuple
• sextuplet
• sexual
• sexual abstention
• sexual abuse
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• sexual characteristic
• sexual climax
• sexual congress
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• sexual discrimination