What fish eats fish that eats plaction?

There are lots of fish that eat plankton. They are called primary consumers. They are fish like Herring and Anchovies and can form enormous shoals of millions of fish. This makes them attractive to predatory fish.

Larger predatory fish eat these primary consumers. These could be anything from Tuna, bass, shark, snapper. There are lots of large predatory fish that are adapted to the places they live.