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West African bichir (Polypterus retropinnis) — Polypteridae

West African bichir

Polypterus retropinnis
Family: Polypteridae
LC · Least Concern

The West African bichir (Polypterus retropinnis) is a freshwater fish of the family Polypteridae that grows up to 34 cm.

Length
34 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
West-Central Africa; small rivers, swamps and flooded zones of the Congo basin.
Edibility
Rarely eaten

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Description

The West African bichir is an ancient fish of the bichir family (Polypteridae) from the Congo basin and West-Central Africa. The species grows to about 34 cm and has an elongate, snake-like body covered with hard, rhomboid ganoid scales and a row of small finlets on the back, characteristic of bichirs. It inhabits small rivers, swamps and flooded zones. Bichirs are living fossils that can breathe air with a pair of primitive lungs and so survive in oxygen-poor water. As a predator it hunts, mainly at night, small fishes, insects and crustaceans. The species is harmless to humans.

Frequently asked questions

How do you recognise the West African bichir?

The West African bichir has an elongate, eel-like body, is mainly brown and shows a plain pattern. Living fossil with ganoid scales, dorsal finlets and primitive lungs for breathing air.

Where does the West African bichir live?

The West African bichir lives in fresh water and is mostly found around sand or mud bottom. West-Central Africa; small rivers, swamps and flooded zones of the Congo basin.

How big does the West African bichir get?

The West African bichir grows to a maximum of about 34 cm.

Is the West African bichir dangerous to humans?

No, the West African bichir is harmless to humans. None required: this species is harmless to humans.

Is the West African bichir edible?

The West African bichir is rarely eaten.

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All data

Identification

English name
West African bichir verified
Scientific name
Polypterus retropinnis
Family
Polypteridae

Appearance

Size class
Medium verified
Max length (cm)
34.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Plain inferred
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Natural range
West-Central Africa; small rivers, swamps and flooded zones of the Congo basin. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small fishes, insects and crustaceans sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Living fossil with ganoid scales, dorsal finlets and primitive lungs for breathing air. sourced

For anglers

Edibility
Rarely eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. 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 Polypterus

More from the family Polypteridae

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