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Underachiever Oscar (Will Smith) is a pint-sized fish with grand aspirations. When mob-connected great white shark Frankie (Michael Imperioli) is accidentally killed, Oscar concocts a story with Frankie's peace-loving brother Lenny (Jack Black) that it was he who murdered the shark. Suddenly hailed "Sharkslayer" by his aquatic brethren, Oscar has bigger fish to fry when... Wikipedia