Pacific Jack Mackerel

Aquarium Inhabitant Bio

Trachurus symmetricus


A small, schooling fish. Can be identified by an olive-green coloration on the back with a silvery belly and dark spot on the gill plate behind the eye. Length does not exceed 3 feet. Mackerel in this exhibit range from 5-9”.

Habitat and distribution

Adults found in the open ocean up to 500 miles offshore, younger individuals found near the coast around piers and kelp beds. Ranges from southeastern Alaska to southern Baja and into the Gulf of California.


Small crustaceans and fish larvae suspended in the water column.

Fun Fact

Jack mackerel have a series of sharp scales, or scutes along the sides of their body that can deter potential predators or cause harm to fishers if not handled properly.