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Natural Life History
of Steelhead (Oncorhynchus mykiss)
Anadromous and Resident Forms
Smoltify at various ages
Multiple years in ocean
Able to spawn on more than one occasion –
Spawned out adults (Kelts) return to the ocean, gain weight, develop new eggs, then return to fresh water streams to spawn again.
Unique populations within subbasins
Notes:
Give fish opportunity to spawn another time. Fish picks who, where, when.