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Bite Compass
Freshwater

Brown Trout

Salmo trutta

Introduced freshwater salmonid, the older of WA's two trout species and less actively stocked these days than rainbow. Holdover populations persist in the Pemberton/Donnelly streams, Wellington Dam and some upper south-west tributaries, where wild-spawning fish quietly maintain themselves. Harder to catch than rainbows, generally larger when caught.

Size
Up to 5kg, commonly 400–800g
Peak season
Apr–Oct (cooler months)
Minimum size (WA)
30 cm
Bag limit (WA)
4 (combined freshwater bag)

Overview

Brown trout were stocked into WA south-west streams from the early 1900s and built small self-sustaining populations in the Donnelly, Warren and Lefroy Brook systems before the rainbow programme took over the heavy stocking work. DPIRD still releases some browns each year, but the focus has shifted to rainbow, and most browns now caught in WA are wild-spawned holdover fish. They run larger on average than rainbows, hold tighter to cover, and feed more selectively. The Pemberton/Donnelly catchments remain the heartland; Wellington Dam and a handful of upper tributaries hold the rest. Same licence framework as rainbow.

Identification

Also known as Brown, browns, German brown

Golden-brown to olive, heavier-bodied than a rainbow, with black spots plus rust-red or orange spots along the flank, most of them ringed by a pale halo. No pink lateral band. The tail is largely unspotted, which is the fastest way to separate a brown from a rainbow in the net when the colours are washed out. Older males develop a hooked lower jaw approaching the winter spawn. Adipose fin present, as on all trout. In WA waters there is essentially nothing else to confuse them with — the only real question on any south-west trout is brown or rainbow, and the tail answers it.

How to Catch

Best Baits

Scrubworms, mudeyes under a float, small yabbies, garden worms

Lures

Small hardbodies (Rapala CD-3, suspending minnows), 2–3" soft plastics on light jigheads, small spinners, wet and dry flies

Rigs

Light spin gear — 4–6lb mono or 8lb braid, 6lb fluorocarbon leader. Fly anglers run 4–5 weight outfits with floating lines on the streams. Browns are leader-shy; lighter and longer leaders outperform heavy ones in clear water.

Technique

On the streams, work upstream with small hardbodies, plastics or flies, casting tight to cover — undercut banks, log jams, deep pools below riffles. Browns hold in shaded ambush water and feed selectively, so presentation matters more than for stocked rainbows. Dawn and dusk are when bigger browns commit. On the dams, slow-troll suspending hardbodies along the points and inflows, especially through winter.

Best Time

April through October is the productive window, with autumn (April–June) and the back end of winter into early spring (August–October) producing the better fish. Browns spawn in winter. There is no closed trout season in WA — south-west fresh waters are open all year, except the Shannon River and Water Corporation drinking-water dams, which are always closed. First and last light and the dark hours are the standouts, with darker moons and overcast days helping.

Size & Growth

Commonly 400–800g and 30–40cm. A kilo stream fish is a good one and worth the walk; Wellington Dam and the lower Donnelly turn up occasional fish of 2–3kg. Browns run larger on average than rainbows in WA for a simple reason — most of them are wild-spawned holdover fish that have survived several seasons rather than recent releases. They are slower-growing in the small forest streams, which are cool but not especially rich, and longer-lived than rainbows. A stream brown over 40cm has been there a while and knows the water better than you do.

Diet & Habitat

Insects, mudeyes, gilgies, worms and small fish — galaxiids and juvenile redfin — with the big ones turning nocturnal and taking frogs and anything else that hits the surface after dark. They hold tighter to cover than rainbows: undercut banks, log jams, boulder edges and the deep pools below riffles, sitting in shade and ambushing rather than cruising. The WA heartland is the Pemberton and Donnelly catchments — the Donnelly below One Tree Bridge, the Warren near Pemberton, Lefroy Brook — with Wellington Dam, Big Brook and a handful of upper south-west tributaries holding the rest.

WA Size & Bag Limits

Minimum size 30 cm
Bag limit 4 (combined freshwater bag)
Counts toward The statewide freshwater finfish bag of 4 is shared across the whole category — rainbow and brown trout, catfish and freshwater cobbler, and the freshwater striped perch such as sooty grunter. A South-West Freshwater Angling Licence is required (under-16s exempt), and the Shannon River and Water Corporation drinking-water dams are closed to fishing.

Bag limit: 4 freshwater finfish combined — the statewide freshwater mixed bag covers rainbow and brown trout, catfish and freshwater cobbler, and the freshwater striped perch (sooty grunter and relatives), not just the trout. Minimum size: 300mm. A South-West Freshwater Angling Licence is required (under-16s exempt). The Shannon River and Water Corporation drinking-water dams are closed to fishing.

Last checked . Limits change — confirm with DPIRD before you fish.

Eating Quality

Yes — brown trout is good eating, and the flesh varies from pale cream to pink depending entirely on what the fish has been eating, with the pinker crustacean-fed fish the better of the two. Mild, clean flavour that bakes, pan-fries or hot-smokes well. Whole is the simplest treatment: gut, score, lemon and herbs, 15–20 minutes in a hot oven. Larger wild browns out of clean south-west stream water are particularly good and many anglers rate them above stocked rainbows on the plate. Bleed on capture and get it cold — trout flesh softens quickly. Do not overcook it; browns are leaner than they look and go dry in the last minute. Like rainbows, they freeze poorly, so a fish or two eaten fresh beats a bag limit in the freezer.

Where to Catch Brown Trout

Big Brook Dam (Pemberton) Glen Mervyn Dam (Collie) Harvey Dam Logue Brook Dam (Lake Brockman) Pemberton / Donnelly River Wellington Dam (Collie)

Guides Featuring Brown Trout

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