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Flathead (Grammoplites scaber) — Platycephalidae

Flathead

Grammoplites scaber

The Flathead (Grammoplites scaber) is a brackish-water fish of the family Platycephalidae that grows up to 30 cm.

Length
30 cm
Water
Brackish
Depth
45.0–90.0 m
Diet
Carnivore
Behaviour
Solitary
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Can cause injury
Edibility
Rarely eaten

Description

The rough flathead is a flathead (Platycephalidae) from the Indo-West Pacific. The species reaches about 30 cm and has an elongate body with a strongly flattened, rough head and a mottled camouflage pattern. It lives half-buried on mud and sand bottoms and is taken by trawl to about 55 m deep; juveniles may enter brackish water. As an ambush predator it waits for prey to pass and then lunges suddenly at small fishes and crustaceans. On the head and gill cover it bears sharp spines that can cause cuts and punctures when handled.

Frequently asked questions

How do you recognise the Flathead?

The Flathead has a torpedo-shaped body, is mainly brown and shows a marbled pattern.

Where does the Flathead live?

The Flathead lives in brackish water and is mostly found around sand or mud bottom.

How big does the Flathead get?

The Flathead grows to a maximum of about 30 cm. On average the species is around 20 cm.

Is the Flathead dangerous to humans?

The Flathead can cause injury; handle it with care.

Is the Flathead edible?

The Flathead is rarely eaten.

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All data

Identification

Dutch name
Ruwe platkop sourced
English name
Flathead verified
Scientific name
Grammoplites scaber
Family
Platycephalidae
Other names
Rough flat head; Rough flathead verified

Appearance

Size class
Medium verified
Max length (cm)
30.0 verified
Average length (cm)
20.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Marbled inferred
Tail shape
Straight inferred
Mouth position
Superior (upward) inferred
Lips
Thin 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)
45.0 verified
Max depth (m)
90.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Rarely eaten sourced
Fishing method
Bodemvissen met natuurlijk aas (worm, garnaal of vis) op of vlak boven de bodem. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Can cause injury sourced

Status & sources

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

Same genus Grammoplites

More from the family Platycephalidae

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