Seafood labeling can ditfnieely be confusing! While King Mackerel and Spanish Mackerel are both found in the Atlantic Ocean, Atlantic Mackerel is a different species. Atlantic Mackerel is typically found in the North Atlantic Ocean whereas Spanish and King Mackerel are predominantly caught in the South Atlantic and Gulf of Mexico. If you're buying from a fish counter or fishmonger, try and ask to see if they can tell you which species they are referring to, or where the fish was caught which might help you discern which species it is. Silver Coho and Coho are often used interchangeably and refer to the same species. Wild Alaskan caught coho salmon is a great choice!