Premise: Catfish is a 2010 American documentary film directed by Henry Joost and Ariel Schulman, involving a young man, Nev, being filmed by his brother and friend, co-directors Ariel and Henry, as he builds a romantic relationship with a young woman on the social networking website Facebook. The film was a critical and commercial success. It led to an MTV reality TV series, "".
Hypothesis: Catfish filming started in 2009.