Cold Fish , Tsumetai Nettaigyo? is a 2010 Japanese serial killer film directed by Sion Sono. The film is about a quiet and unambitious owner of a tropical fish shop whose life and family are taken over by a fellow fish entrepreneur who happens to be a serial killer. The film is loosely based on the exploits of two Tokyo serial killers, Sekine Gen and Hiroko Kazama, a husband and wife duo who owned a pet shop and murdered at least four people.
Following Alien vs Ninja and Mutant Girls Squad, Cold Fish is the third film to be released by Nikkatsus Sushi Typhoon, their gorethemed series. Director and writer Sion Sono was influenced by Japanese crime cases while developing Cold Fish, specifically about an actual killing spree committed by a dog kennel owner in the 1980s the story of the film involves a family of three that becomes entangled in a string of ongoing murders perpetrated by a tropical fish salesman in Shizuoka Prefecture. Sono also wanted to depict a sense of total hopelessness which he felt is lacking in Japanese films.Cold Fish premiered at the 67th Venice International Film Festival on September 7, 2010. It was also shown at film festivals in Pusan and at the Toronto International Film Festival where it received its North American premiere. Cold Fish won the best screenplay award in the Fantastic Features section at Fantastic Fest 2010. It was released in Japan on January 29, 2011. ........
Source: Wikipedia