Rock cod is a popular fish species that is commonly found in the Pacific Ocean off the coast of North America. While the name "rock cod" is commonly used to refer to this fish, there are several other synonyms that can be used as well. These include Pacific snapper, Pacific rockfish, red snapper, and rock salmon. Each of these names has their own unique history and origin, but they all refer to the same fish species. Whether you're ordering at a seafood restaurant or trying to identify a fish at the market, knowing these synonyms can help you find what you're looking for.