Sockeye salmon is a type of Pacific salmon, also known as red salmon due to its distinct red flesh. However, there are several other synonyms for sockeye salmon including blueback salmon, redfish, kokanee salmon, and nerka salmon. Blueback salmon is a term typically used in the eastern part of North America and was originally used to describe adults returning to spawn in freshwater. Redfish is another term used in the eastern part of North America and was primarily used to describe the commercial fishery for sockeye salmon. Kokanee salmon is a land-locked variant of sockeye salmon commonly found in lakes and inland waters. Finally, nerka salmon is the scientific name for sockeye salmon.