Fish Tank is a 2009 British drama film written and directed by Andrea Arnold. The film is about Mia, a volatile and socially isolated 15-year-old, and her relationship with her mother's new boyfriend. Fish Tank was well-received and won the Jury Prize at the 2009 Cannes Film Festival. It also won the 2010 BAFTA for Best British Film. It was included in the BBC's The 21st Century's 100 greatest films (compiled in 2016), ranking at no. 65 on the list.The film was funded by BBC Films and the UK Film Council. It was theatrically released on 11 September 2009 by Curzon Artificial Eye.