Old Sendai people call that SHIBI(マグロ=鮪)
Aomori Oma Tuna 青森 大間マグロhttp://blog.goo.ne.jp/mittchan_january/e/6738e75335d129ec1b0d7125025648b7
Shizuoka Suruga Tuna 静岡 駿河マグロ http://blog.goo.ne.jp/mittchan_january/e/8e94d61d53c2f8aa616abb7f1b4a0ac7
tq