Crabs are one of the handiest and most underrated bait-and-table targets around Australia. Plenty of anglers chase them in their own right, whether it’s muddies in the mangroves or blue swimmers over the sand, because they’re good fun to catch and top eating when you get a feed.
In Australian waters, crabs turn up in all sorts of country depending on the species. Mud crabs love mangrove creeks, muddy estuaries and saltmarsh edges up north and along the east coast, while blue swimmer crabs are more at home over sandy bays, seagrass flats and lower estuary channels in southern and western waters.
Crabs are opportunistic scavengers more than anything, picking over dead fish, shellfish, worms and whatever else they can grab. They also hunt when they get the chance, especially around drains, channel edges and structure where food gets pushed past them.
Tide matters a lot, with the run-in and run-out both moving food and scent, and many crabs getting more active around the turn or when water starts pushing through creeks and channels. Low light often helps, especially overnight, early morning or on gloomy days when they seem bolder and move about more freely. Light to moderate wind is usually easier to fish because pots sit better and you can work safely, while strong wind can dirty the water too much or make checking gear a pain. Smaller swell is generally better in open bays and coastal spots, because big swell stirs up weed and makes crabs harder to find and pots harder to hold in place.
For muddies and blue swimmers, sturdy crab pots or dillies baited with fish frames, mullet heads or other oily baits do the job well. Use enough rope and a solid float, and set gear along mangrove edges, channel drop-offs, sandy gutters or seagrass edges where crabs naturally patrol.
A crab will often follow a scent trail straight into a pot from surprisingly long distances, which is why fresh, smelly bait outfishes old washed-out bait every time.