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Thomas's elephantfish (Marcusenius thomasi) — Mormyridae

Thomas's elephantfish

Marcusenius thomasi
Family: Mormyridae
LC · Least Concern

The Thomas's elephantfish (Marcusenius thomasi) is a freshwater fish of the family Mormyridae that grows up to 20 cm.

Length
20 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Solitary
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Rarely eaten

Description

Thomas's elephantfish is an African weakly electric fish of the family Mormyridae from West Africa. The species has an elongate, laterally compressed, dark body with the dorsal and anal fins set far back, characteristic of this family, and a small, knobbly chin. Like all elephantfishes it generates a weak electric field with an organ in the tail base to navigate in turbid water, locate prey and communicate with conspecifics. It searches the bottom for insect larvae and small invertebrates. The species is harmless to humans.

Frequently asked questions

How do you recognise the Thomas's elephantfish?

The Thomas's elephantfish has a torpedo-shaped body, is mainly brown and shows a plain pattern.

Where does the Thomas's elephantfish live?

The Thomas's elephantfish lives in fresh water and is mostly found around sand or mud bottom.

How big does the Thomas's elephantfish get?

The Thomas's elephantfish grows to a maximum of about 20 cm.

Is the Thomas's elephantfish dangerous to humans?

No, the Thomas's elephantfish is harmless to humans.

Is the Thomas's elephantfish edible?

The Thomas's elephantfish is rarely eaten.

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All data

Identification

Dutch name
Thomas' olifantsvis sourced
English name
Thomas's elephantfish sourced
Scientific name
Marcusenius thomasi
Family
Mormyridae

Appearance

Size class
Medium verified
Max length (cm)
20.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Inferior (downward) inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Rarely eaten sourced
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 sourced

Status & sources

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

Same genus Marcusenius

More from the family Mormyridae

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