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How to Rig for Black Marlin

Istiompax indica

Black marlin are the heaviest billfish commonly caught off Australia, with the reef edge off Cairns famous for granders over 1,000 pounds and smaller juveniles running close to shore along the east coast. Unlike blue marlin, they often feed near the coast and reef, so live-baiting around bait schools is very effective. Release is standard practice.

Answer at a glance
Best rig
Offshore Lure Trolling Rig
Best bait
Skirted lures or skip-rigged garfish trolled along reef edges and current lines
Where
boat
Typical size
60–140 in
Season
Juvenile fish run close inshore along the east Australian coast in summer, while the giant fish off Cairns are caught from roughly September to December. Southern Hemisphere seasons: summer is roughly December to February and winter June to August.
Main line from outriggerBall-bearing swivelWind-on leader 12-20ftCrimpSkirted lureHookTowed at 6-9 knots
#1 Best Match

Offshore Lure Trolling Rig

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Skirted lures on long, heavy mono leaders are towed behind a moving boat at 6-9 knots in a spread of four to six lines, searching open water for fish that are too scattered to find by drifting. It is the main way marlin, tuna, and wahoo are caught offshore in the US, Australia, and New Zealand.

  • Main line30-130 lb monofilament or braid with a mono top shot, line class matched to the target
  • Leader80-400 lb monofilament wind-on leader, crimped; short wire trace for wahoo
  • Leader length12-20ft wind-on leader, lure crimped to the end
  • Hooks8/0 - 12/0 lure rig on a heavy mono wind-on leader, sized to the fish
  • WeightNone, the lure head keeps it tracking; an in-line trolling lead (4-16oz) only if you want it deeper
  • Line to sinkerNot applicable, lures run at or near the surface off outriggers and the transom
  • BaitSkirted lures or skip-rigged garfish trolled along reef edges and current lines
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Heavy main lineSwivel or wind-onLeader60-200 lbCircle hookLive bait, floss bridlethrough the nose or eye sockets
Heavy Live Bait Rig
A big non-offset circle hook is bridled through the nose or eye sockets of a live mackerel, scad, or small tuna with floss, so the bait swims freely and the hook stays clear to set in the corner of the jaw.
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Source & regulation note

Technique guidance is educational. Seasons, size limits, bag limits, closures, and protected areas can change. Always verify the current rules before fishing or keeping fish.

FishBase species profile ↗State and territory fisheries agencies ↗Fisheries New Zealand ↗Editorial methodology

Fishing regulations vary by location and season. Check current local regulations before fishing.

Last reviewed: 2026-09-26

Common Questions

What is the best rig for Black Marlin?

The Offshore Lure Trolling Rig is the top recommendation for Black Marlin. Skirted lures on long, heavy mono leaders are towed behind a moving boat at 6-9 knots in a spread of four to six lines, searching open water for fish that are too scattered to find by drifting. It is the main way marlin, tuna, and wahoo are caught offshore in the US, Australia, and New Zealand.

What bait works for Black Marlin?

Check the recommended rig cards above for bait notes specific to Black Marlin.

When is the best time to catch Black Marlin?

Juvenile fish run close inshore along the east Australian coast in summer, while the giant fish off Cairns are caught from roughly September to December. Southern Hemisphere seasons: summer is roughly December to February and winter June to August.. Typical size runs 60–140 in. Always check current regulations before keeping fish.

Where do you catch Black Marlin?

Black Marlin is caught while boat fishing. Black marlin are the heaviest billfish commonly caught off Australia, with the reef edge off Cairns famous for granders over 1,000 pounds and smaller juveniles running close to shore along the east coast. Unlike blue marlin, they often feed near the coast and reef, so live-baiting around bait schools is very effective. Release is standard practice.