No, rock-cod is not red snapper. Red snapper is a type of fish that belongs to the Lutjanidae family, while rock-cod is a type of fish that belongs to the Scorpaenidae family. Both types of fish are popular seafood items, but they are different. Rock-cod is commonly found in the North Pacific, including some areas off the coast of California, while red snapper is found in the Atlantic Ocean and Gulf of Mexico. Both types of fish are low in fat and high in protein, making them healthy choices when it comes to eating seafood. If you want to try rock-cod or red snapper, they can be purchased at many grocery stores and seafood markets. They can also be found on restaurant menus, as they are popular choices for sushi and other dishes. Although rock-cod and red snapper are different types of fish, they taste good when prepared in similar ways. Both should be baked or broiled to cook them thoroughly without drying out the meat.