Japanese amberjack is a fish of coastal and open waters around Japan and Korea, where it is raised for food. It has a blue back, a silvery belly, and a faint yellow line along each side. Japanese amberjack is also called yellowtail or hamachi.
A wild yellowtail caught off California is usually this northeastern Pacific species. Japanese amberjack lives mainly around Japan and Korea, so the catch location helps when the fish look alike.
Why they get mixed upBoth are amberjacks with a yellow line along the side.