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Black dwarf elephantfish (Brevimyrus niger) — Mormyridae

Black dwarf elephantfish

Brevimyrus niger
Family: Mormyridae
LC · Least Concern

The Black dwarf elephantfish (Brevimyrus niger) is a freshwater fish of the family Mormyridae that grows up to 15 cm.

Length
15 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Small groups
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
Fresh water of the Sahel region (Nile, Niger, Sudd).
Edibility
Not eaten

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Description

Brevimyrus niger is a small African elephantfish (Mormyridae) from fresh water of the Sahel region, including the Nile, the Niger and the swamps of the Sudd in South Sudan. The species has a stocky, dark body and reaches about 15 cm. It stays among fringing vegetation and migrates onto the floodplain to spawn. Like other mormyrids it has a weak electric organ with which it orients itself in turbid water, locates prey and communicates with conspecifics. It feeds on small invertebrates and insect larvae on the bottom. The species occurs mainly inland and rarely in the lower courses of basins.

Frequently asked questions

How do you recognise the Black dwarf elephantfish?

The Black dwarf elephantfish has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Weak electric organ; dweller of bank vegetation that migrates onto the floodplain.

Where does the Black dwarf elephantfish live?

The Black dwarf elephantfish lives in fresh water and is mostly found around mixed bottom. Fresh water of the Sahel region (Nile, Niger, Sudd).

How big does the Black dwarf elephantfish get?

The Black dwarf elephantfish grows to a maximum of about 15 cm.

Is the Black dwarf elephantfish dangerous to humans?

No, the Black dwarf elephantfish 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.

Is the Black dwarf elephantfish edible?

The Black dwarf elephantfish is not usually eaten.

More photos

Black dwarf elephantfish (Brevimyrus niger) — Mormyridae — 2
iNaturalist ((c) H.Grenier, some rights reserved (CC BY-NC))
Black dwarf elephantfish (Brevimyrus niger) — Mormyridae — 3
Wikimedia Commons — Boulenger, George Albert; Loat, L. (Public domain)
Black dwarf elephantfish (Brevimyrus niger) — Mormyridae — 4
iNaturalist ((c) kouakzoum, some rights reserved (CC BY-NC))
Black dwarf elephantfish (Brevimyrus niger) — Mormyridae — 5
iNaturalist ((c) kouakzoum, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Black dwarf elephantfish sourced
Scientific name
Brevimyrus niger
Family
Mormyridae

Appearance

Size class
Small verified
Max length (cm)
15.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
Fresh water of the Sahel region (Nile, Niger, Sudd). inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small invertebrates and insect larvae sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Migrates to the floodplain to spawn during high water. inferred
Special features
Weak electric organ; dweller of bank vegetation that migrates onto the floodplain. sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
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

More from the family Mormyridae

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