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Darwin jawfish (Opistognathus darwiniensis) — Opistognathidae

Darwin jawfish

Opistognathus darwiniensis

The Darwin jawfish (Opistognathus darwiniensis) is a saltwater fish of the family Opistognathidae that grows up to 50 cm.

Length
50 cm
Water
Saltwater
Depth
1.0–4.0 m
Body shape
Elongated (eel-like)
Substrate
Stone or rock
Danger
Harmless
Range
Oceania: Australia

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Description

The Darwin jawfish is a jawfish (Opistognathidae) from coastal waters of northern Australia. The species grows to about 50 cm and has a stocky forebody with a very large mouth and large eyes. As a bottom-dweller it digs and lines a vertical burrow with pebbles, from which it protrudes its forebody to snap at passing zooplankton; when threatened it withdraws backwards into the burrow. The male broods the eggs in his mouth. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Darwin jawfish?

The Darwin jawfish has an elongate, eel-like body and is mainly brown.

Where does the Darwin jawfish live?

The Darwin jawfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Oceania: Australia

How big does the Darwin jawfish get?

The Darwin jawfish grows to a maximum of about 50 cm.

Is the Darwin jawfish dangerous to humans?

No, the Darwin jawfish is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

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All data

Identification

English name
Darwin jawfish sourced
Scientific name
Opistognathus darwiniensis
Family
Opistognathidae

Appearance

Size class
Large verified
Max length (cm)
50.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown sourced
Tail shape
Rounded inferred

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
1.0 verified
Max depth (m)
4.0 verified
Natural range
Oceania: Australia sourced
Origin
Native inferred

Behaviour & biology

Territorial
Yes inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

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

Same genus Opistognathus

More from the family Opistognathidae

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