Flathead
Estuary / RiverFlathead are ambush predators that lie half-buried on sandy and muddy bottoms throughout Perth's Swan River, Mangles Bay and the Peel-Harvey. WA's flathead are mostly southern blue-spotted and sand flathead — not the east-coast dusky — and they're one of the easiest soft-plastic targets going. Bounce a plastic along the bottom and hold on for the thump.
Overview
Flathead are one of Perth's most accessible estuary species — found on sandy and muddy bottoms throughout the Swan River and sheltered bays. They're ambush predators that lie half-buried in the substrate waiting to pounce on passing prey. Soft plastic fishing for flathead is one of the most effective and enjoyable ways to fish Perth's estuaries.
How to Catch
Whitebait, prawns, small mullet, squid strips
Soft plastics are king: 3–4 inch paddle-tails (Z-Man MinnowZ 3", Gulp 4" Minnow in pumpkinseed or nuclear chicken) on a 1/4–3/8oz jig head. Gulp 3" Shrimp on a 1/6oz head is deadly over the flats. Metal blades (Ecogear ZX40, Samaki Vibelicious 70mm) work when you need to cover ground or sound the bottom in deeper channels.
For bait, a running sinker rig with a size 2/0 hook and enough weight to hold bottom. For lures, a 1/4–3/8oz jig head matched to a 3–4 inch paddle-tail soft plastic. Use 6–10lb fluorocarbon leader.
Cast soft plastics or bait across sandy flats and work them slowly along the bottom with a hop-and-drop retrieve. The key is keeping contact with the bottom — flathead won't chase far from their ambush position. Cover plenty of ground, fan-casting to locate fish. The hit is usually a sharp thump followed by a head-shake.
Active throughout the day, with a slight edge at dawn and dusk. Tide changes that flush baitfish across the flats are ideal. Work the edges of channels and drop-offs where flathead sit waiting for food to wash past.
Up to 5kg, commonly 500g–1.5kg
Year-round
Yes — flathead are some of the best eating in Perth. Firm, white, almost boneless fillets that are the gun choice for fish and chips. Skin and fillet them, leave the cheeks on for a treat, then crumb, batter or just pan-fry in butter. Best eaten fresh within a day or two rather than frozen.
Minimum size: 300mm. Individual daily bag limit: 8, counted within the statewide nearshore/estuarine finfish total mixed bag of 16 per fisher — so eight flathead leaves room for eight other nearshore fish. WA has no slot limit like Queensland's. Always check current DPIRD rules before you keep a feed — limits change.
Perth Tips
The Swan River from Fremantle to the Narrows, Mangles Bay, and the Peel-Harvey are top flathead spots. Watch for sharp gill spines when handling — use a lip grip. Flathead often lie on the edges of sand and weed, so work your lure along these transitions.