Coho

The earlier spelling "cohose" was re-interpreted as a plural form (for a similar development, see pea). From Halkomelem.

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Full definition of coho

(plural cohos)

An anadromus and semelparous salmon, Oncorhynchus kisutch, found in the coastal regions of the northern Pacific Ocean, used as a symbol by several Native American tribes.

1996, Committee on Protection and Management of Pacific Northwest Anadromous Salmonids, National Research Council, Upstream: Salmon and Society in the Pacific Northwest, page 105,Overall, OCN^{Coastal Natural} coho constitute the largest aggregate of coho populations in the United States outside Alaska.
1998, Robert Harvey Conrad, Coho Salmon Escapement to the Skagit River Estimated Using a Mark-recapture Method, 1989, page i,Since 1965, an index live-count method has been used to annually estimate the number of coho salmon in the escapement to the Skagit River.
2000, US Department of Agriculture, Forest Service Sitka Ranger District, Alaska Department of Fish and Game, Redoubt Lake Cabin, Baranof Island: Fish and Wildlife Opportunities, unnumbered page,Redoubt Lake has good populations of both coho and sockeye salmon and minor runs of pink salmon and a few chum salmon. The sockeye run peaks during early July, and the coho run begins in August.