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three-spined stickleback

DEFINITIONS OF: three-spined stickleback

1

n of rivers and coastal regions

Synonyms:
Gasterosteus aculeatus
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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