With that, they end up eliminating food for other species, causing the altering of the food web. Their diet consists of snails, mussels, and other invertebrates that the native fish depend on. Not only does their diet consist of smaller animals, but also their diet can include any other native fish in the water that they begin to invade. The bigheaded carp can eat up to 40% of its own its own body weight. When the amount of plants, mussels, and plankton are lowered in the lakes and rivers, the ecosystem becomes unbalanced and the native species that depend on the food sources begin to