Atlantic Mackerel
Pure pelagic energy in a 12-inch package — Atlantic mackerel run both sides of the North Atlantic in schools that can number in the millions, following cold water and prey from offshore wintering grounds to inshore feeding grounds each spring.
Their iridescent blue-green bars and frantic pulls on light gear make them a cornerstone of coastal fishing, and their rich, oily flesh puts them among the best-eating fish in the ocean.
Scientific Name: Scomber scombrus
Also known as Boston mackerel, Norwegian mackerel, Scottish mackerel
- Twenty to thirty wavy black bars cross the upper body against an iridescent blue-green back — the pattern is vivid on a live fish but fades fast after death, so a dull mackerel is a dead one.
- Silvery-white belly with no markings; both dorsal fins are gray or dusky, and the pectoral fins are black or dusky at the base.
- Spindle-shaped body tapering sharply at both ends, with a large forked tail — the silhouette alone separates it from chunkier inshore species like bluefish or pollock.
- Common length around 12 inches; maximum is about 24 inches and 7.5 lb, though anything over 2 lb is a big mackerel.
What to know
Habitat Distribution
- A cold-water pelagic species spanning both sides of the North Atlantic — from the Mediterranean and Baltic Seas in the east to the western Atlantic from Labrador south to the mid-Atlantic seaboard. Northwest and Northeast Atlantic populations are genetically distinct and don't mix.
- Stays within roughly 45–61°F (7–16°C); when surface temperatures climb past that ceiling, schools push offshore or drop into deeper water and become much harder to reach from shore.
- Warmer months bring fish close to the surface and near the coast; as temperatures fall in autumn, schools retreat offshore and south into deeper water — a predictable migration that defines the inshore season.
- Primarily marine, occasionally entering brackish water; most feeding activity happens in the upper 650 feet of the water column, with the bulk near the surface.
Specific Spots
- Tidal headlands and harbor mouths funnel baitfish and zooplankton into tight corridors — mackerel stack at these pinch points because the current does the work of concentrating their food.
- Piers and jetties with strong tidal flow are reliable during the inshore season; the current sweeps prey past a fixed point and mackerel work it in rotation, which means a well-placed cast keeps connecting.
- In open water, surface slicks and diving terns mark active schools — when birds are working, mackerel are pushing bait from below and the school is within casting range.
Atlantic Mackerel FAQ
Answers from onWater's species guide.
What are the best lures and bait for Atlantic Mackerel?
Diamond jigs, mackerel trees, and chrome spoons in the 1/4 to 1 oz range are the most consistent producers, the flash and erratic action key into the crustaceans and small baitfish mackerel are always chasing.
What do Atlantic Mackerel eat?
Crustaceans, copepods, krill, and small shrimp, make up the bulk of the diet, which is why small, flashy lures that suggest movement rather than a specific shape outfish anything that tries to look like a specific baitfish.
Where do Atlantic Mackerel live?
A cold-water pelagic species spanning both sides of the North Atlantic, from the Mediterranean and Baltic Seas in the east to the western Atlantic from Labrador south to the mid-Atlantic seaboard. Northwest and Northeast Atlantic populations are genetically distinct and don't mix.
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