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Flathead (Inegocia japonica) — Platycephalidae

Flathead

Inegocia japonica
LC · Least Concern

The Flathead (Inegocia japonica) is a saltwater fish of the family Platycephalidae that grows up to 35 cm.

Length
35 cm
Water
Saltwater
Depth
7.0–85.0 m
Diet
Carnivore
Behaviour
Solitary
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Northwest Pacific; sandy and muddy bottoms of the shelf.
Edibility
Commonly eaten

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Description

The Japanese flathead is a flathead (Platycephalidae) from the northwestern Pacific. The species has a strongly flattened, bony-armoured head and an elongate, mottled body that camouflages it on the bottom. It lives on sand and mud bottoms of the continental shelf. As an ambush hunter it lies partly buried and springs on small fishes and crustaceans. It is a local food fish. The species is harmless to humans.

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, armoured head and marbled camouflage; burrowing bottom ambush predator.

Where does the Flathead live?

The Flathead lives in the sea (marine waters) and is mostly found around sand or mud bottom. Northwest Pacific; sandy and muddy bottoms of the shelf.

How big does the Flathead get?

The Flathead grows to a maximum of about 35 cm. On average the species is around 20 cm.

Is the Flathead dangerous to humans?

No, the Flathead is harmless to humans. None required: this species is harmless to humans.

Is the Flathead edible?

Yes, the Flathead is commonly eaten.

More photos

Flathead (Inegocia japonica) — Platycephalidae — 2
Williams, Jeffrey T. (CC0 1.0) via GBIF — USNM
Flathead (Inegocia japonica) — Platycephalidae — 3
Williams, Jeffrey T. (CC0 1.0) via GBIF — USNM
Flathead (Inegocia japonica) — Platycephalidae — 4
iNaturalist ((c) Tim Karnasuta, some rights reserved (CC BY-NC))
Flathead (Inegocia japonica) — Platycephalidae — 5
iNaturalist ((c) Sylvain Le Bris, some rights reserved (CC BY-NC))
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All data

Identification

English name
Flathead verified
Scientific name
Inegocia japonica
Family
Platycephalidae
Other names
Flathead; Japanese flathead; Rusty flathead; Smooth flathead verified

Appearance

Size class
Medium verified
Max length (cm)
35.0 verified
Average length (cm)
20.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Spots 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
Saltwater sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
7.0 verified
Max depth (m)
85.0 verified
Natural range
Northwest Pacific; sandy and muddy bottoms of the shelf. 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, armoured head and marbled camouflage; burrowing bottom 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
None required: this species is harmless to humans. sourced

Status & sources

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

More from the family Platycephalidae

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