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System Glossary
 Glossary Search for grilse (Search Options)

Definition of Term

grilse
(English) Immature anadromous salmonids just before or just after enterinig the river to spawn while still in silvery sea-run condition. Used particularly in reference to Salmo salar and members of the genus Oncorhynchus. Strictly a mature one-winter salmon ready to spawn and so much smaller than those having spent several winters in the sea. (See also: anadromous, spawn, Salmonids)

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