Japanese fishmonger/rockstar "Captain" Tsurizao Morita started his fish-themed band Gyoko ("fishing port") to get people to eat more fish and learn to appreciate it. Besides singing about fish, part of the way he does this is by filleting a tuna's head on stage and describing how to cook it. Watch Morita in action, learn what makes tuna "rock," and get a look inside Tsukiji, the world's biggest fish market, in this segment from the series Being a Fish In Japan, after the jump.

Being A Fish In Japan: Tuna

Watch the rest of director Mischa Kamp's Being A Fish In Japan series at Minimovies.org. Learn more about Gyoko in this Wall Street Journal article.