Slimy Mackerel

The slimy mackerel, scientifically known as Scomber australasicus, is a beloved species found in the coastal waters of Australia and New Zealand. Also colloquially referred to as the "blue mackerel" or "Pacific mackerel," this fish is prized for its availability, ease of catch, and utility as both a sport fish and a reliable source of bait. Anglers appreciate the slimy mackerel for its spirited fight on light tackle, while also valuing its role in culinary preparations, notably in smoked or canned forms. Its abundance and schooling behavior make it an excellent target for novice and experienced fishermen alike, offering both excitement and practicality.

Appearance & Size

The slimy mackerel is easily recognizable by its streamlined, elongated body, designed perfectly for swift swimming. Its coloration is a striking blend of blue-green shades on the back, transitioning to a silvery-white belly. Distinctive black lines run horizontally along the sides, complementing its shiny, sleek appearance. Typically, slimy mackerel range in size from 25 to 30 centimeters, but some individuals can reach lengths of up to 50 centimeters. The largest recorded slimy mackerel have weighed in at around 1 kilogram, though such specimens are less common and present a thrilling catch for any angler.

Habitat & Behavior

This versatile species thrives in a range of marine environments, often found in both inshore and offshore waters. Slimy mackerel favor temperate regions, frequently schooling over sandy bottoms, near reefs, and around coastal bays. They are typically encountered at depths ranging from the surface to about 200 meters. As opportunistic feeders, slimy mackerel prey primarily on plankton, small fish, and crustaceans. Their migratory behavior often corresponds with changes in water temperature and food availability, prompting movements that can lead to spectacular congregations, where large schools create shimmering displays beneath the surface.

Fishing Techniques

When it comes to catching slimy mackerel, a variety of methods can be employed. Due to their schooling nature, they are often targeted with lightweight setups using small hooks and sinkers. Sabiki rigs, with their multiple hooks and colorful lures, prove particularly effective when jigged through schools. For bait, anglers commonly use pieces of pilchard, squid, or even small fish strips. Soft plastic lures and small metal jigs also produce results, especially when mimicking the mackerel’s natural prey. The best times to fish are often during dawn and dusk when feeding activity peaks, providing optimal conditions for a successful outing.

Prime Locations & Seasons

In Australia, the slimy mackerel is widely distributed along the east and south coasts, with notable concentrations around New South Wales and Victoria. New Zealand waters teem with slimy mackerel, particularly around the North Island's coastal regions. The fish is present year-round, but the peak season typically spans from late spring to early autumn when waters are warmer and food is plentiful. Savvy fishermen capitalize on this period to enjoy prolific catches, particularly in areas where natural currents converge, providing nutrient-rich environments that attract these dynamic swimmers in impressive numbers.