Home · Oplegnathidae · Barred knifejaw
Barred knifejaw (Oplegnathus fasciatus) — Oplegnathidae

Barred knifejaw

Oplegnathus fasciatus
Family: Oplegnathidae

The Barred knifejaw (Oplegnathus fasciatus) is a saltwater fish of the family Oplegnathidae that grows up to 80 cm.

Length
80 cm
Water
Saltwater
Depth
1.0–10.0 m
Diet
Carnivore
Behaviour
Small groups
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Edibility
Commonly eaten

Description

The barred knifejaw is a fish of the knifejaw family (Oplegnathidae) from the northwestern Pacific off Japan and Korea. The species grows to about 80 cm and has a deep, silver-grey body with several conspicuous black crossbars that fade with age, and a powerful, parrot-like beak with which it crushes hard prey. It inhabits coastal rocky reefs; juveniles stay near drifting seaweed. It feeds on shellfish, sea urchins, crustaceans and other hard-shelled life. It is a valued sport and food fish and is harmless to humans.

Frequently asked questions

How do you recognise the Barred knifejaw?

The Barred knifejaw has a flattened, disc-shaped body, is mainly silver-grey and shows a vertical stripes pattern.

Where does the Barred knifejaw live?

The Barred knifejaw lives in the sea (marine waters) and is mostly found around stony or rocky ground.

How big does the Barred knifejaw get?

The Barred knifejaw grows to a maximum of about 80 cm.

Is the Barred knifejaw dangerous to humans?

No, the Barred knifejaw is harmless to humans.

Is the Barred knifejaw edible?

Yes, the Barred knifejaw 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
Gebandeerde papegaaibaars sourced
English name
Barred knifejaw verified
Scientific name
Oplegnathus fasciatus
Family
Oplegnathidae
Other names
Rock bream verified

Appearance

Size class
Large verified
Max length (cm)
80.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Vertical bars inferred
Tail shape
Forked 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
Stone or rock sourced
Min depth (m)
1.0 verified
Max depth (m)
10.0 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
Wordt met hengel en aas vanaf rotskusten en boten bevist. sourced
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 Oplegnathus

More from the family Oplegnathidae

Download Fin's Fish Guide

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

Get the beta →