There are four different types of Asian carp in the United states. Bighead carp eat a wide array of algae, zoo plankton, and aquatic insects. They tend to feed closer to the surface. Black carp have special gill rakers used to collect snails and mussels. They feed primarily on crustaceans. Grass carp eat primarily aquatic vegetation. SIlver carp have spongy gill rakers designed for sifting out plankton, which is their main food source. For additional information on Asian carp see the following link: http://www.fws.gov/midwest/LacrosseFisheries/asian_carp.html.