242 Oncorhynchus masou (Brevoort, 1856) Salmonidae Salmonids Salmoninae Salmoniformes Teleostei Masu salmon Northwest Pacific: Japan and adjacent waters. UBC 600140 37 N 139 E Oncorhynchus masou UBC 600154 44 N 143 E Oncorhynchus masou IGFA 38 N 141 E Oncorhynchus masou masou AMNH 18803 1900 Oncorhynchus masou