Sakanazukan (魚図鑑, "Book of Fishes") is a greatest hits album by Japanese rock band Sakanaction. It was released on March 28, 2018 to commemorate the tenth anniversary of their major debut. The album uses an unusual layout in which the three CDs are enclosed in a fish encyclopedia booklet, a homage to the band's name (Sakana (魚) means fish in Japanese).