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Darwin jawfish (Opistognathus dendriticus) — Opistognathidae

Darwin jawfish

Opistognathus dendriticus

The Darwin jawfish (Opistognathus dendriticus) is a saltwater fish of the family Opistognathidae that grows up to 28 cm.

Length
28 cm
Water
Saltwater
Depth
2.0–40.0 m
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless

Description

The Darwin jawfish is a jawfish (Opistognathidae) from shallow sand and rubble water of the Indo-West Pacific. The species grows to about 10 cm and has an elongate, pale body with large eyes and a very large mouth. Characteristically it uses its mouth to build a burrow in the soft bottom, reinforces it with pebbles and hovers upright above it; when in danger it dives in. The male broods the eggs in his mouth. It snaps at passing zooplankton. 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 silver-grey.

Where does the Darwin jawfish live?

The Darwin jawfish lives in the sea (marine waters) and is mostly found around sand or mud bottom.

How big does the Darwin jawfish get?

The Darwin jawfish grows to a maximum of about 28 cm.

Is the Darwin jawfish dangerous to humans?

No, the Darwin jawfish is harmless to humans.

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All data

Identification

Dutch name
Vertakte kaakvis sourced
English name
Darwin jawfish sourced
Scientific name
Opistognathus dendriticus
Family
Opistognathidae
Other names
Dendtric jawfish sourced

Appearance

Size class
Medium verified
Max length (cm)
28.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey inferred
Tail shape
Rounded inferred

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
2.0 verified
Max depth (m)
40.0 verified
Origin
Native inferred

Behaviour & biology

Territorial
Yes inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred

For anglers

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 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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