Each of the famous four has its own special talent, and when they join forces, they are, like the Fantastic Four, pretty much unstoppable. Grass carp (Ctenopharyngodon idella) eat aquatic plants. Silver carp (Hypophthalmichthys molitrix) and bighead carp (Hypophthalmichthys nobilis) are filter feeders; the two fish suck water in through their mouths and then rake out the plankton using comb-like structures in their gills. Black carp (Mylopharyngodon piceus) eat mollusks, like snails.
