What Does A Mackerel Eat?

What Does A Mackerel Eat? Atlantic mackerel feed heavily on crustaceans such as copepods, krill, and shrimp. They also eat squid, as well as some fish and ascidians (sac-like marine invertebrate filter feeders). Several species of fish and marine mammals eat Atlantic mackerel. What do mackerel eat feed? They feed mainly on zooplankton and small