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Black durgeon (Melichthys niger) — Balistidae

Black durgeon

Melichthys niger
Family: Balistidae
LC · Least Concern

The Black durgeon (Melichthys niger) is a saltwater fish of the family Balistidae that grows up to 50 cm.

Length
50 cm
Water
Saltwater
Depth
0.0–75.0 m
Diet
Omnivore
Behaviour
Small groups
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Tropical seas worldwide; clear seaward reefs, especially around oceanic islands.
Edibility
Rarely eaten

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Description

The black triggerfish is a triggerfish of the family Balistidae from tropical seas worldwide. The species grows to about 50 cm and has a dark, nearly black body that shines blue-green in the right light, with pale lines along the base of the dorsal and anal fins. It inhabits clear seaward reefs, especially around oceanic islands, and often gathers in loose groups in the water column. As an omnivore it feeds on zooplankton, algae and small invertebrates. Triggerfishes can lock the first dorsal spine upright to wedge themselves in crevices. The species is harmless to humans.

Frequently asked questions

How do you recognise the Black durgeon?

The Black durgeon has a flattened, disc-shaped body, is mainly black and shows a plain pattern. Almost black with a blue-green sheen; can lock the dorsal fin spine upright in crevices.

Where does the Black durgeon live?

The Black durgeon lives in the sea (marine waters) and is mostly found around stony or rocky ground. Tropical seas worldwide; clear seaward reefs, especially around oceanic islands.

How big does the Black durgeon get?

The Black durgeon grows to a maximum of about 50 cm. On average the species is around 30 cm.

Is the Black durgeon dangerous to humans?

No, the Black durgeon is harmless to humans. None required: this species is harmless to humans.

Is the Black durgeon edible?

The Black durgeon is rarely eaten.

More photos

Black durgeon (Melichthys niger) — Balistidae — 2
iNaturalist ((c) IHUNTA, some rights reserved (CC BY-NC))
Black durgeon (Melichthys niger) — Balistidae — 3
Wikimedia Commons — Brocken Inaglory Original uploader was Brocken Inaglory (CC BY-SA 3.0)
Black durgeon (Melichthys niger) — Balistidae — 4
Guillaume Martin (CC BY-NC 4.0) via GBIF — iNaturalist
Black durgeon (Melichthys niger) — Balistidae — 5
iNaturalist ((c) Dwight Baker, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Black durgeon verified
Scientific name
Melichthys niger
Family
Balistidae
Other names
Black durgon; Black triggerfish; Ebony triggerfish; Black durgon triggerfish; Black oldwife; Blackfish; Ndiouné; Niggerfish; Niger head; Pigger verified

Appearance

Size class
Large verified
Max length (cm)
50.0 verified
Average length (cm)
30.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Black inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
0.0 verified
Max depth (m)
75.0 verified
Natural range
Tropical seas worldwide; clear seaward reefs, especially around oceanic islands. inferred
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Zooplankton, algae and small invertebrates sourced
Social behaviour
Small groups 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
Almost black with a blue-green sheen; can lock the dorsal fin spine upright in crevices. 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
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Melichthys

More from the family Balistidae

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