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Flathead (Platycephalus grandispinis) — Platycephalidae

Flathead

Platycephalus grandispinis

The Flathead (Platycephalus grandispinis) is a saltwater fish of the family Platycephalidae that grows up to 38 cm.

Length
38 cm
Water
Saltwater
Depth
10.0–75.0 m
Diet
Carnivore
Behaviour
Solitary
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Around Australia; soft bottoms of coastal waters.
Edibility
Commonly eaten

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Description

The longspine flathead is a flathead (Platycephalidae) from the waters around Australia. The species has a strongly flattened head and an elongate body, with prominent spines on the gill covers, and high-set eyes. It lies half-buried on soft bottoms of coastal waters and is an ambush hunter that 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 Flathead?

The 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.

Where does the Flathead live?

The Flathead lives in the sea (marine waters) and is mostly found around sand or mud bottom. Around Australia; soft bottoms of coastal waters.

How big does the Flathead get?

The Flathead grows to a maximum of about 38 cm.

Is the Flathead dangerous to humans?

No, the 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 Flathead edible?

Yes, the Flathead is commonly eaten.

More photos

Flathead (Platycephalus grandispinis) — Platycephalidae — 2
Chi Phan (CC BY 4.0) via GBIF — AM
Flathead (Platycephalus grandispinis) — Platycephalidae — 3
Indiana Riley (CC BY 4.0) via GBIF — AM
Flathead (Platycephalus grandispinis) — Platycephalidae — 4
iNaturalist ((c) J. Martin Crossley, some rights reserved (CC BY-NC-SA))
Flathead (Platycephalus grandispinis) — Platycephalidae — 5
iNaturalist ((c) John Sear, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Flathead verified
Scientific name
Platycephalus grandispinis
Family
Platycephalidae
Other names
Longspine flathead; Long-spined flathead; Spiky flathead; Western sand flathead verified

Appearance

Size class
Medium verified
Max length (cm)
38.0 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
Saltwater sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
10.0 verified
Max depth (m)
75.0 verified
Natural range
Around Australia; soft bottoms of coastal waters. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
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. 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

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