Marron
FreshwaterWA's iconic south-west endemic freshwater crayfish, found in dams, rivers, and weirs from Harvey through to the Warren. Targeted in a short licensed open season each summer using drop nets, scoop nets, or snares — never rod and line. The cleanest-tasting freshwater crustacean in the country and the reason a lot of South-West holiday plans get built around early February.
Overview
Marron are a smooth-shelled freshwater crayfish endemic to WA's south-west. The smooth marron (Cherax cainii) is the species you'll catch in the dams and rivers from Harvey down to Pemberton — the closely-related hairy marron (Cherax tenuimanus) is critically endangered and restricted to the upper Margaret River system, where they cannot be taken. Pemberton, Wellington Dam, Waroona Dam, and Drakesbrook Weir are the classic public marroning waters, and the season is short by design — a few weeks in midsummer, managed tightly by DPIRD to keep stocks healthy. It's a tradition more than a fishery: families camp out, set pots in the late afternoon, and check them by torchlight after dinner.
Identification
Smooth marron, freshwater crayfish
A big, smooth-shelled freshwater crayfish, dark brown to almost black — blue-shelled individuals turn up in some dam populations and are the same animal. Five pairs of legs with the front pair as heavy claws, and paired ridges running back across the head. Size settles most identifications: mature marron dwarf the gilgies, koonacs and introduced yabbies sharing the same water. Gilgies are palm-sized and darker; koonacs are stubby with broad claws; yabbies are olive to blue with a smoother, rounder head. The one that matters legally is hairy marron, which carry a bristly carapace and claws, are restricted to the upper Margaret River, and cannot be taken at all.
How to Catch
Sheep liver, kangaroo meat, fish frames, dog biscuits
Not applicable — marron are not taken on lures or rod and line
Drop nets and scoop nets in waters where they're permitted, or snares (a baited cord with a noose) in snare-only waters like Harvey and Waroona Dams. A standard drop net is a wire frame with mesh dropped vertically; bait sits in the centre and the net is hauled straight up. No rod, no line, no spear — those methods are illegal.
Set drop nets in 1–3m of water along weed edges, submerged timber, or rocky margins where marron forage at night. Soak each net for 10–20 minutes, then haul slowly and steadily — yanking it up loses fish. Snaring is the South-West art form: walk the bank with a torch, spot the marron in the shallows, and ease the noose over its head from behind. Measure the carapace (eye socket to back of shell) on the bank with a dedicated marron gauge and return anything under size or any berried (egg-carrying) female immediately.
After dark is when marron move out of cover to feed. The first few nights of the season are usually the most productive before pressure spreads the population. Warm, still evenings produce better than cold or windy nights.
Up to 400g, commonly 100–250g; carapace 80–120mm
Jan 8 – Feb 5 (open season)
Size & Growth
Commonly 100–250g with an 80–120mm carapace, which is a keeper by a reasonable margin. A 300g marron is a good one and 400g-plus is a genuine trophy that gets photographed. They are slow growers — several years to reach the 80mm legal carapace length, longer in cold or crowded water — and long-lived past a decade. That slow growth is the whole reason the season is a few weeks in midsummer rather than open. The trophy waters carry a 90mm size and a bag of 5 precisely because lower densities there produce bigger animals worth protecting.
Diet & Habitat
Omnivorous scavengers that live mostly on decaying leaf litter, plant matter, small invertebrates and whatever dies and sinks — which is why liver, kangaroo meat and fish frames work as bait. By day they sit under rocks, submerged timber and undercut banks; after dark they move into the shallows to forage, which is what makes torchlight snaring possible. They need cool, well-oxygenated water and go backwards in warm shallow dams. A south-west endemic, translocated widely into dams and weirs — Pemberton, Wellington Dam, Waroona Dam and Drakesbrook Weir are the reliable public-access waters.
WA Size & Bag Limits
| Minimum size | 80 mm carapace (90 mm in trophy waters) |
|---|---|
| Bag limit | 8 (5 in trophy waters) |
| Counts toward | A Recreational Marron Licence is required — a separate licence from the south-west freshwater angling licence, not an addition to it. The open season runs from 12 noon 8 January to 12 noon 5 February. Trophy waters are the waters within 500m of the high water mark of Harvey Dam, Waroona Dam and the Hutt River. Drop nets, scoop nets and snares are the only legal methods, and several waters — Harvey and Waroona among them — are snare-only. Berried females must be released. |
A Recreational Marron Licence is required — a separate licence from the south-west freshwater angling licence, not an addition to it. The open season runs from 12 noon, 8 January to 12 noon, 5 February. Minimum size: 80mm carapace length in general waters, 90mm in DPIRD trophy waters — the waters within 500m of the high water mark of Harvey Dam, Waroona Dam and the Hutt River. Daily bag limit: 8 in general waters, 5 in trophy waters. Possession limit: 16 in general waters, 5 on or adjacent to trophy waters, applying everywhere except your principal residence. Drop nets, scoop nets and snares only — no spearing or rod and line — and berried (egg-carrying) females must be released. Several waters are snare-only, including Harvey Dam, Waroona Dam, Drakes Brook Dam, Big Brook Dam, Glen Mervyn Dam, Logue Brook Dam, Wellington Dam and the Margaret River.
Eating Quality
Yes — plenty of people rate marron the best-eating crustacean in Australia, and they are not wrong. Sweet, clean, delicate flesh, closer to a freshwater lobster than a yabby: marron grow far bigger and taste noticeably cleaner, with none of the earthy note yabbies can pick up. Cook them live by plunging into boiling salted water for four to six minutes depending on size — chilling them in an ice slurry first sedates them, which is both more humane and easier to handle. Then split lengthways and grill flesh-side down with garlic butter, or just eat them plain with lemon. Overcooking is the only way to ruin one; the flesh goes rubbery a minute past done. Keep them alive until cooking in a damp hessian bag rather than a bucket, where they will use up the oxygen and die. Cooked tail meat freezes acceptably, but the point of a marron season is eating them the night you catch them.
Perth Tips
Buy a marron gauge before the season — eyeballing the size is how people end up with fines. Keep your catch alive in a hessian bag dampened with dam water rather than in a bucket where they'll deplete oxygen and die. Pemberton, Wellington Dam, Waroona Dam, and Drakesbrook Weir are the reliable public-access options — but Harvey, Waroona, Drakesbrook and Wellington are all snare-only waters, so pack a snare rather than nets. Check the DPIRD rules every year — bag limits and trophy waters have shifted in recent seasons.