Is a mackerel a secondary consumer?

Mackerel are generally considered secondary consumers in marine food chains. They primarily feed on smaller fish, zooplankton, and various invertebrates, which are often primary consumers. By consuming these organisms, mackerel play a crucial role in transferring energy from primary producers (like phytoplankton) through the food web. However, they can also be preyed upon by larger predators, such as larger fish, seabirds, and marine mammals.