Home · Mormyridae · Henry's mormyrid
Henry's mormyrid (Isichthys henryi) — Mormyridae

Henry's mormyrid

Isichthys henryi
Family: Mormyridae
LC · Least Concern

The Henry's mormyrid (Isichthys henryi) is a freshwater fish of the family Mormyridae that grows up to 29 cm.

Length
28.7 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Small groups
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Rarely eaten

Description

Henry's mormyrid is an elongate African fish of the family Mormyridae (elephantfishes) reaching about 29 cm. The brown-black body has a long dorsal and anal fin running rearward and a notably thin tail base. Like all elephantfishes it generates weak electric pulses with an organ in the tail; with them it orients in turbid water, recognises conspecifics and communicates - a kind of 'electric language'. The species comes from the Congo basin and surroundings in Central and West Africa and lives in quiet, turbid rivers and creeks. Mainly at night it hunts insect larvae, worms and small crustaceans. Elephantfishes have a proportionally very large brain mass, linked to their electric sense.

Frequently asked questions

How do you recognise the Henry's mormyrid?

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

Where does the Henry's mormyrid live?

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

How big does the Henry's mormyrid get?

The Henry's mormyrid grows to a maximum of about 29 cm.

Is the Henry's mormyrid dangerous to humans?

No, the Henry's mormyrid is harmless to humans.

Is the Henry's mormyrid edible?

The Henry's mormyrid is rarely eaten.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Henry's olifantsvis inferred
English name
Henry's mormyrid verified
Scientific name
Isichthys henryi
Family
Mormyridae

Appearance

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

Habitat & distribution

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

Behaviour & biology

Diet
Carnivore verified
Social behaviour
Small groups verified
Territorial
Yes verified
Activity
Nocturnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified

For anglers

Edibility
Rarely eaten verified
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 verified

Status & sources

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

More from the family Mormyridae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →