Home · Platycephalidae · Bluespot flathead
Bluespot flathead (Platycephalus speculator) — Platycephalidae

Bluespot flathead

Platycephalus speculator

The Bluespot flathead (Platycephalus speculator) is a brackish-water fish of the family Platycephalidae that grows up to 90 cm.

Length
90 cm
Water
Brackish
Depth
1.0–30.0 m
Diet
Carnivore
Behaviour
Solitary
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Southern Australia; surf beaches, estuaries and bays.
Edibility
Commonly eaten

Want the complete picture on the Bluespot flathead?

Get the app

Description

The southern flathead is a flathead (Platycephalidae) from the waters around southern Australia. The species has a strongly flattened head and an elongate, mottled body with sharp spines on the gill covers and high-set eyes. It is a shallow-water species of surf beaches, estuaries and bays, where it waits half-buried on soft bottoms. As an ambush hunter it takes passing small fishes and crustaceans. It is not venomous, but the sharp head spines can give a wound when handled.

Frequently asked questions

How do you recognise the Bluespot flathead?

The Bluespot flathead has an elongate, eel-like body, is mainly brown and shows a spots pattern. Strongly flattened head with sharp opercular spines; half-buried ambush predator of shallow water.

Where does the Bluespot flathead live?

The Bluespot flathead lives in brackish water and is mostly found around sand or mud bottom. Southern Australia; surf beaches, estuaries and bays.

How big does the Bluespot flathead get?

The Bluespot flathead grows to a maximum of about 90 cm.

Is the Bluespot flathead dangerous to humans?

No, the Bluespot flathead is harmless to humans. Not venomous, but the sharp head and fin spines can inflict a cut or puncture wound. Clean the wound thoroughly and seek medical care if it becomes infected.

Is the Bluespot flathead edible?

Yes, the Bluespot flathead is commonly eaten.

More photos

Bluespot flathead (Platycephalus speculator) — Platycephalidae — 2
iNaturalist ((c) Warwick Moyse, some rights reserved (CC BY-NC))
Bluespot flathead (Platycephalus speculator) — Platycephalidae — 3
iNaturalist ((c) Sascha Schulz, some rights reserved (CC BY-NC))
Bluespot flathead (Platycephalus speculator) — Platycephalidae — 4
iNaturalist ((c) J. Martin Crossley, some rights reserved (CC BY-NC-SA))
Bluespot flathead (Platycephalus speculator) — Platycephalidae — 5
iNaturalist ((c) Phil W, some rights reserved (CC BY-NC))
Fin

Want the complete picture on the Bluespot flathead?

Point your camera at the fish and Fin names the species in seconds. Free, and the Bluespot flathead is one of 12,519 species in the app.

Get the app →

All data

Identification

English name
Bluespot flathead verified
Scientific name
Platycephalus speculator
Family
Platycephalidae
Other names
Castelnau's flathead; Deep water flathead; King flathead; Lakes Entrance flathead; Longnose flathead; Shovelnose flathead; Southern bluespotted flathead; Southern dusky flathead; Southern flathead; Toothy flathead; Yank flathead verified

Appearance

Size class
Extra large verified
Max length (cm)
90.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Spots inferred
Tail shape
Straight inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
1.0 verified
Max depth (m)
30.0 verified
Natural range
Southern Australia; surf beaches, estuaries and bays. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Passing small fishes and crustaceans sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Strongly flattened head with sharp opercular spines; half-buried ambush predator of shallow water. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
Not venomous, but the sharp head and fin spines can inflict a cut or puncture wound. Clean the wound thoroughly and seek medical care if it becomes infected. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Platycephalus

More from the family Platycephalidae

Fin

Want the complete picture on the Bluespot flathead?

Point your camera at the fish and Fin names the species in seconds. Free, and the Bluespot flathead is one of 12,519 species in the app.

Get the app →
Is this the Bluespot flathead? Get the app