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Bearded ghoul (Inimicus didactylus) — Synanceiidae

Bearded ghoul

Inimicus didactylus
Family: Synanceiidae

The Bearded ghoul (Inimicus didactylus) is a brackish-water fish of the family Synanceiidae that grows up to 25 cm.

Length
25 cm
Water
Brackish
Depth
5.0–80.0 m
Diet
Carnivore
Behaviour
Solitary
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Range
Indo-West Pacific; sandy and silty bottoms of reefs.
Edibility
Rarely eaten

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Description

The bearded ghoul is a stinger (Synanceiidae), a close relative of the stonefish, from the Indo-West Pacific. The species has an irregular, stocky body with warty skin and colourful, finger-like lower pectoral fin rays with which it 'walks' over the bottom. It lies half-buried on sand and silt bottoms of lagoon and seaward reefs and waits as an ambush hunter for small fishes and crustaceans. The dorsal fin spines carry potent venom; a sting causes intense pain and requires medical care.

Frequently asked questions

How do you recognise the Bearded ghoul?

The Bearded ghoul has a flattened, disc-shaped body, is mainly brown and shows a marbled pattern. Warty skin and finger-like pectoral fin rays for 'walking' over the bottom; powerful venom in the dorsal spines.

Where does the Bearded ghoul live?

The Bearded ghoul lives in brackish water and is mostly found around stony or rocky ground. Indo-West Pacific; sandy and silty bottoms of reefs.

How big does the Bearded ghoul get?

The Bearded ghoul grows to a maximum of about 25 cm.

Is the Bearded ghoul dangerous to humans?

The Bearded ghoul is venomous — handle spines with care and seek medical help after a sting if needed. The dorsal fin spines carry potent venom; a sting causes intense, burning pain and swelling. Immerse the wound in hot water (about 45 C) for 30-90 minutes to break down the venom, remove spine fragments and seek urgent medical care.

Is the Bearded ghoul edible?

The Bearded ghoul is rarely eaten.

More photos

Bearded ghoul (Inimicus didactylus) — Synanceiidae — 2
iNaturalist ((c) Mark Rosenstein, some rights reserved (CC BY-NC))
Bearded ghoul (Inimicus didactylus) — Synanceiidae — 3
iNaturalist ((c) Maarten De Brauwer, some rights reserved (CC BY-NC))
Bearded ghoul (Inimicus didactylus) — Synanceiidae — 4
Wikimedia Commons — Bernard DUPONT from FRANCE (CC BY-SA 2.0)
Bearded ghoul (Inimicus didactylus) — Synanceiidae — 5
Wikimedia Commons — Bjoertvedt (CC BY-SA 3.0)
Fin

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All data

Identification

English name
Bearded ghoul verified
Scientific name
Inimicus didactylus
Family
Synanceiidae
Other names
Bearded ghoul; Demon stinger; Devil stinger; Longsnout stinger; Longsnout stingerfish; Spiny devilfish; Popeyed sea goblin verified

Appearance

Size class
Medium verified
Max length (cm)
25.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown inferred
Pattern
Marbled inferred
Tail shape
Rounded inferred
Mouth position
Superior (upward) inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Stone or rock sourced
Min depth (m)
5.0 verified
Max depth (m)
80.0 verified
Natural range
Indo-West Pacific; sandy and silty bottoms of reefs. 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
Warty skin and finger-like pectoral fin rays for 'walking' over the bottom; powerful venom in the dorsal spines. sourced

For anglers

Edibility
Rarely eaten sourced
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
Venomous / poisonous sourced
First aid
The dorsal fin spines carry potent venom; a sting causes intense, burning pain and swelling. Immerse the wound in hot water (about 45 C) for 30-90 minutes to break down the venom, remove spine fragments and seek urgent medical care. sourced

Status & sources

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

Same genus Inimicus

More from the family Synanceiidae

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