Someone told me there is an old action/thriller Japanese movie about Asian arowana. One keeper kills another keeper for his fish, the Yakuza are involved, and the police try to solve the crime. Something along those lines. The movie played overseas in foreign film festivals around 10 years ago I think.I heard it gonna be a movie about the book base on true story. Some of the people who own rare fish and rare arowana almost got kills because of the fish. stay tune