Home · Pentacerotidae · Japanese armorhead
Japanese armorhead (Pentaceros japonicus) — Pentacerotidae

Japanese armorhead

Pentaceros japonicus
LC · Least Concern

The Japanese armorhead (Pentaceros japonicus) is a saltwater fish of the family Pentacerotidae that grows up to 25 cm.

Length
25 cm
Water
Saltwater
Depth
100.0–830.0 m
Diet
Carnivore
Behaviour
Small groups
Body shape
Flat / disc-shaped
Substrate
Mixed bottom
Danger
Harmless
Edibility
Commonly eaten

Description

The Japanese armorhead is a deep-water fish of the family Pentacerotidae from the northwestern Pacific, around Japan. The species reaches about 25 cm and has a deep, compressed body and a head armoured with rough, exposed bony plates, to which the name refers. Juveniles live pelagically in the open water, while adults live benthopelagically near the bottom, at depths of about 100 to 830 m. The diet consists of small bottom crustaceans and invertebrates. The species is regularly caught in deep-sea fisheries and eaten.

Frequently asked questions

How do you recognise the Japanese armorhead?

The Japanese armorhead has a flattened, disc-shaped body, is mainly silver-grey and shows a plain pattern.

Where does the Japanese armorhead live?

The Japanese armorhead lives in the sea (marine waters) and is mostly found around mixed bottom.

How big does the Japanese armorhead get?

The Japanese armorhead grows to a maximum of about 25 cm. On average the species is around 15 cm.

Is the Japanese armorhead dangerous to humans?

No, the Japanese armorhead is harmless to humans.

Is the Japanese armorhead edible?

Yes, the Japanese armorhead is commonly eaten.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Japanse pantserkop sourced
English name
Japanese armorhead verified
Scientific name
Pentaceros japonicus
Family
Pentacerotidae
Other names
Japanese boarfish verified

Appearance

Size class
Medium verified
Max length (cm)
25.0 verified
Average length (cm)
15.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Straight inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Mixed bottom sourced
Min depth (m)
100.0 verified
Max depth (m)
830.0 verified
Origin
Native sourced

Behaviour & biology

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

For anglers

Edibility
Commonly 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
Harmless sourced

Status & sources

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

Same genus Pentaceros

More from the family Pentacerotidae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →