Sakanaction , stylised as sakanaction, are a Japanese rock band from Sapporo, Hokkaido. Their music is a fusion of alternative rock, electronic, pop, and new wave styles. The band consists of five members: Ichiro Yamaguchi, Motoharu Iwadera, Ami Kusakari, Emi Okazaki, and Keiichi Ejima.

Ichiro Yamaguchi , is a Japanese musician. He is the vocalist, guitarist and songwriter for the Hokkaido rock band Sakanaction.