Shark Tale

This mafia movie, set in the world of saltwater fish, is the story of what happens when the son of the shark boss (Gandolfini) of a fish crime family is killed, and a bottom-feeder named Oscar (Smith) is found at the scene of the crime. Hoping to win favor with the enemies of the ganglord, the fast-talking hustler poses as the killer known as the "sharkslayer", but soon learns it's a dangerous game in a world where the big fish generally eat the little fish... (Scorsese plays a puffer fish; Black plays a shark)