Derrick Jones is the secondary villain in Piranha 3D.
Derrick is a porn director who is doing a movie with his two actress Danni and Crystal in his boat "The Barracuda" he invites Jake to come with them. Derrick convinces Kelly to join them in the boat with them and Kelly accepts. When their in the boat tour Derrick and Andrew grab Crystal and Danni having sex under the water naked. Later, Derrick puts some tequila in Crystal's belly. When the propeller gets stuck Derrick fix it but the boat crash with the rocks and Derrick and Crystal fell down, after Crystal dies, Derrick is sliced in half like a cakes, devoured, and dies.