Abstract
It was concluded that the salmonid fish found in Ise Bay, the Inland Sea, Tokai district, Kinki district, and Shikoku district (Figs.1-2, Table 1) is the sea-run form of“Amago”, Oncorhynchus rhodurus Jordan and McGregor which is widely distributed in the freshwater of southwestern Japan.It was shown that the sea-run form is morphologically different from the salmonid fish“Biwamasu”in Biwa Lake which has been considered to be conspecific with O.rhodurus.
