Also known as Jack, Mangy, Red Bream (QLD juvenile colloquialism). Bait, technique, tide windows, and where the bite is on right now.
Mangrove Jack — Pound-for-pound estuary brawler — pure aggression in 50 cm. Also called Jack, Mangy, Red Bream (QLD juvenile colloquialism).
A mangrove jack will hit a lure 60 cm from a snag and be back in the snag before the rod loads. The fight is the first three seconds — after that, the fish is either at the boat or wrapped around a root with the leader scuffed through. Locked drag, short rod, 50 lb leader minimum in NSW estuaries.
Mangrove Jack is also known as: Jack, Mangy, Red Bream (QLD juvenile colloquialism). Pound-for-pound estuary brawler — pure aggression in 50 cm.
Regional names can confuse anglers and cause misidentification. The table of common names below covers the most-used alternatives across Australia, New Zealand and the US:
Key to correct identification: check the regulations-authority species sheet for your state or territory before keeping any fish — minimum legal sizes, bag limits and identification guides are published by each fisheries department and are the authoritative source.
Hero spots in our coverage where Mangrove Jack is in season for June. Click through for the live forecast.
Out of season across our covered spots in June. Check back in October.
Cast tight — and I mean tight — to mangrove roots, rock bars, fallen timber, jetty pylons. Then crank fast for 2-3 metres to get the jack to commit, then pause. Strikes are violent and immediate; lock the drag because they will bury you in structure inside 1.5 seconds. Heavy gear: 30–40 lb braid, 40–60 lb leader. The dawn surface bite in tropical estuaries (Hinchinbrook, Daintree) is the most thrilling jack fishing in the country.
Run-up tide into mangrove root systems is when jacks move up into shallower ambush positions. The last two hours of the run-up through to the top of the tide is the prime window. They'll feed on the run-out too, but the run-up is more reliable. Dawn and dusk over-ride tide — a dead tide at sunrise still produces.
Spring tides around new and full moon push jacks higher into structure and create stronger current at creek mouths — both help. The few days before the new moon are particularly productive in QLD estuaries. Night fishing during the dark of the moon with live baits produces some of the biggest fish.
QLD: 35 cm, bag of 5. NSW: 35 cm, bag of 5. NT: 35 cm, bag of 5. WA: 35 cm, bag of 4. Mangrove jacks are slow-growing — a 50 cm jack is 10+ years old. Verify at the relevant state fisheries authority.
From our training corpus of ~1.1M angler-logged catches across 14 regions. Last refreshed 2026-05-18.
Olli-Mikael Vaittinen has fished his whole life. Fifteen years of fly fishing, guiding seasons on Norway's Lakselva — his favourite Atlantic salmon river — and a blue marlin landed in Vava'u, Tonga. Founder of Fishare — the app that puts the data behind the decisions every angler makes on the water.
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