Crabbing is the highest-value catch per dollar spent in Australian fishing. Four pots, a bag of frames and a run-out tide can produce a feed that would cost hundreds at a fish market.
The catch rate is almost entirely about placement and timing — bait choice matters far less than most people think.
Mud crab: where and when
Mud crabs live in mangrove-lined creeks and river systems from about Shark Bay in WA around the north to northern NSW. Set pots against undercut mangrove banks, at drain mouths and on the edge of deeper holes.
The best crabbing follows warm water and rain. Summer and the weeks after a freshwater push are peak, and the run-out tide moves crabs out of the mangroves and past your pots.
Blue swimmer: where and when
Blue swimmers prefer sand and weed flats in bays and estuaries from about 1 to 15 m, and they are far more mobile than mud crabs. Set pots in a line across the flat and move any pot that produces nothing in an hour.
Late summer to autumn is the peak in most southern systems. Warm, calm water on a rising tide over a weed edge is the classic scenario.
Pots, bait and the law
Use oily, tough bait: mullet heads, fish frames, chicken necks. Secure it in the bait holder so it cannot be stripped in one visit.
Every state regulates pot numbers, pot design, float size, tag markings and where pots may be set. Unmarked pots are confiscated. Check your state's rules and write your name and details clearly on the float.
Sexing and measuring crabs
Turn the crab over. A male (buck) has a narrow, pointed flap; a female (jenny) has a broad, rounded one. Female mud crabs are protected in every state and must be returned regardless of size.
Measure across the widest part of the carapace, including or excluding the spikes depending on your state's definition. Check the fill by pressing the underside — a full crab is hard and heavy for its size.
Key takeaways
- ▸Placement and tide beat bait choice every time.
- ▸Mud crab: mangrove edges and drains on a run-out.
- ▸Blue swimmer: sand and weed flats, keep moving pots.
- ▸All female mud crabs must be released; mark your pots legally.
This guide is general information only. Fishing regulations differ by state and change regularly — confirm current rules with your fisheries authority before you fish.