Blueback is a term commonly used to describe a specific species of Pacific salmon, but it can also have various synonyms depending on the context. One of the most common synonyms for blueback is sockeye, typically used when referring to the salmon as a food source. Other synonyms may include red salmon or kokanee in different regions. Outside of the salmon realm, blueback may also refer to the distinctive blue-green backs of various fish species or even the blue-colored covers of specific books. In any case, synonyms for blueback can be useful in providing a more accurate, descriptive term for various objects or creatures.