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Blue Mackerel
Common

Blue Mackerel

Scomber australasicus

Blue mackerel are fast-swimming pelagic fish with distinctive wavy blue-green lines on their backs and silvery sides. They are smaller than other mackerel species but are excellent eating and provide good sport on light tackle.

The record

Blue Mackerel at a glance

Scientific name
Scomber australasicus
Typical size
10-16 inches, 0.5-2 lbs
Water
Saltwater
Habitat
Offshore
Rarity in the Fishdex™
Common
Where it lives

Habitat

Blue mackerel are found in open ocean waters and coastal areas, often forming large schools near the surface. Anglers target them by trolling small lures or jigs, or by casting into feeding schools when they push baitfish to the surface.

Catch one and it is yours

Log a blue mackerel through the Cobia Camera and this entry fills in with your photo, your personal best, and the exact conditions on the day. The app also carries the slot and season rules for wherever you are standing.

How the Fishdex™ works
Questions

Blue Mackerel questions people ask

Blue Mackerel is Scomber australasicus.

A typical blue mackerel runs 10-16 inches, 0.5-2 lbs. Cobia records the length and weight of every blue mackerel you log and keeps your personal best on its Fishdex entry.

Blue mackerel are found in open ocean waters and coastal areas, often forming large schools near the surface. Anglers target them by trolling small lures or jigs, or by casting into feeding schools when they push baitfish to the surface. It is a salt water species, filed under offshore in the Fishdex.

Yes. Log one through the Cobia Camera and this entry fills in with your own photo, your personal best, and the conditions on the day you caught it. The app also carries the slot limits and season dates for wherever you are standing. It is free.

Free on iPhone

Tomorrow morning starts tonight

Set your home water, pick a drive radius, and wake up to a plan.

Download Cobia on the App Store Android coming soon

iPhone, iOS 17 or later. Setup takes about a minute.