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Deepwater Flathead

Neoplatycephalus conatus




These appropriately named bottom-dwelling marine fish have a flat-triangular shaped head and long, greyish-green, tapering body. Wild-caught, they are found mainly on the continental shelf and upper slope in depths of about 70-490m and are caught by trawling off southern WA and in the Great Australian Bight. It is endemic to Australia and closely related to Tiger Flathead, but lacks their distinctive spots.

Other Names

Deep Sea Flathead; Flathead; Trawl Flathead.


Platycephalidae (Flatheads).


Available year round with peaks in SA and WA from October to February.

Size and Weight

Commonly 700g-1.8kg and 45-65cm, but can grow to 4kg and 94cm.


Low-medium priced.


Bartail, Bluespotted, Dusky, Longspine, Northern Sand, Rock, Southern Bluespotted, Southern Sand, Tiger, and other Flatheads.

To Buy

Sold whole (gilled and gutted) and in fillet form. In whole fish look for lustrous skin with a slippery, mucilaginous coating, firm flesh, and a pleasant, fresh sea smell. In fillets, look for yellowish-white, firm, lustrous, moist flesh without any brown markings (a few dark veins may be visible) or oozing water and with a pleasant fresh sea smell.

To Store

Make sure whole fish is scaled, gilled, gutted and cleaned thoroughly. Lay whole fish and fillets in a single layer on a plate and cover with plastic wrap or place in an airtight container. Refrigerate for up to 3 days or freeze whole fish for up to 6 months, and fillets for up to 3 months, below -18ºC.

To Cook

Average yield is 30%. Has a slightly sweet flavour, low oiliness and slightly dry, medium textured flesh with fine flakes. Their unusual shape means that there are relatively few bones, mostly towards the head section of the fillet, which are easily removed. The bones make good stock. Cut thick fillets into serving-size portions to allow even heat penetration.

Cooking Methods

Steam, poach, deep-fry, pan-fry, bake, grill, barbecue. It is best wrapped in foil or banana leaves if baking or barbecuing, to prevent it drying out. It is an excellent fish battered for fish and chips.

Goes Well With

Beer batter, beetroot, cauliflower, capers, cornichons, dill, garlic, horseradish, lemon, lettuce, lime, mayonnaise, onions, tartare sauce, tomato, white wine vinegar, yoghurt.


Bream, Hussar, Morwong, Redfish, Tarwhine, Whiting.




Flathead Fillets in Beer Batter
Flathead Fillets with Roasted Baby Beetroots & Walnuts
Flathead Pitas with Tzatziki & Cherry Tomato Salad