Sockeye salmon (Oncorhynchus nerka), also called red salmon or blueback salmon in the USA, is an anadromous species of salmon found in the Northern Pacific Ocean and rivers discharging into it. There are also completely landlocked populations of the same species, which are known as kokanee or “silver trout.” Sockeye salmon is the third most common Pacific salmon species, after pink and chum salmon. The name “sockeye” is an anglicization of suk-kegh (sθə́qəy̓), its name in Halkomelem, the language of the indigenous people along the lower reaches of the Fraser River (one of British Columbia’s many native Coast Salish languages). Suk-kegh means red fish. 
Sockeye Salmon Run <== click here to watch
Range and habitat
Sockeye salmon ranges as far south as the Columbia River in the eastern Pacific (though individuals have been spotted as far south as the 10 Mile River on the Mendocino Coast of California) and northern Hokkaidō Island in Japan in the western Pacific, and as far north as Bathurst Inlet in the Canadian Arctic in the east and the Anadyr River in Siberia in the west. Landlocked populations occur in the Yukon Territory and British Columbia in Canada, and in Alaska, Washington, Oregon, California, New York, Utah, Idaho, Montana, Nevada, Colorado, New Mexico, and Wyoming in the United States. Nantahala Lake is the only spot in North Carolina where kokanee salmon are found. The fish, which is native to the western United States, was stocked in Nantahala Lake in the mid-1960s by the N.C. Wildlife Resources Commission in an attempt to establish the species as a forage fish for other predator fishes in the lake. This stock has remained and become a favorite target for anglers.
Sockeye salmon, unlike other species of Pacific Salmon, feed extensively on zooplankton during both freshwater and saltwater life stages. Their numerous gill rakers strain the plankton from the water. This diet may be the reason for the striking hue of their flesh, as well as their very low concentration of methylmercury. They also tend to feed on small aquatic organisms such as shrimp. Insects are part their diet at the juvenile stage.