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The spring following the winter in which those juvenile cutthroat reach about 6" in length they will become smolts and expand their habitats to the larger streams and Puget Sound itself.
Curt
The cutthroat spawn almost exclusively in those small creeks. While the resulting fry and parr will move up and down in those small streams - typically moving downstream with lower summer flows and back upstream during the late fall/winter period. Can find the cutthroat parr using the sloughs at the mouth of tributaries to over-winter and summer rearing. The smolts typical are using the larger mainstem water for transportation (late April, May, and early June) from the small stream rearing areas to the estuaries. During that migration period the smolts (and the adult kelts) will take advantage of various feeding opportunities (salmon fry, insects, etc.).Curt,
Could you expand on this more on how smolts from smaller creeks are utilizing larger
streams? Are they then spawning in the larger rivers or simply dip ins utilizing the stream and estuary habitat but still spawning in their natal creeks?
Thanks
SF
The cutthroat spawn almost exclusively in those small creeks. While the resulting fry and parr will move up and down in those small streams - typically moving downstream with lower summer flows and back upstream during the late fall/winter period. Can find the cutthroat parr using the sloughs at the mouth of tributaries to over-winter and summer rearing. The smolts typical are using the larger mainstem water for transportation (late April, May, and early June) from the small stream rearing areas to the estuaries. During that migration period the smolts (and the adult kelts) will take advantage of various feeding opportunities (salmon fry, insects, etc.).
The sub-adult fish are interesting in that they typically spend their winters in the lower 20 or 30 miles of the river but will take advantage of potential winter-feeding opportunities, insect hatches, salmon flesh, and spring salmon fry.
Curt