Juveniles:
* Plankton: Tiny organisms like copepods, krill, and other zooplankton are the main food source for young mackerel.
Adults:
* Small fish: Mackerel primarily eat small, schooling fish like herring, anchovies, sardines, and other smaller mackerel species.
* Squid and cephalopods: They also consume squid and other cephalopods, depending on availability.
* Crustaceans: Crabs, shrimp, and other crustaceans can also be part of their diet.
Specific examples:
* Atlantic Mackerel: Feeds heavily on herring, sand lance, and other small fish.
* Pacific Mackerel: Preys on anchovies, sardines, and krill.
* Spanish Mackerel: Favors small fish like menhaden, mullet, and shrimp.
Hunting habits:
* Mackerel are known to hunt in groups, using their speed and agility to chase down prey.
* They often feed near the surface of the ocean, where their prey is most abundant.
Their diet plays a crucial role in their growth and survival, and changes in their food availability can have significant impacts on their populations.