Fin's Fish Guide
The Henn's knifefish (Gymnotus henni) is a freshwater fish of the family Gymnotidae that grows up to 31 cm.
Description
The Henn's knifefish is a weakly electric knifefish (Gymnotidae) from fresh water of the Pacific slope of Colombia. The species grows to about 31 cm and has an elongate, rearward-tapering, brown-banded body with a long anal fin along the belly with which it swims forwards and backwards. With a weak electric organ it explores its surroundings at night; the current cannot be felt by humans. It hunts small invertebrates and small fish. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Henn's knifefish?
The Henn's knifefish has an elongate, eel-like body, is mainly brown and shows a vertical stripes pattern.
Where does the Henn's knifefish live?
The Henn's knifefish lives in fresh water and is mostly found around mixed bottom. South America: Colombia
How big does the Henn's knifefish get?
The Henn's knifefish grows to a maximum of about 31 cm.
Is the Henn's knifefish dangerous to humans?
No, the Henn's knifefish 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.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Gymnotus
More from the family Gymnotidae
Want the complete picture on the Henn's knifefish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Henn's knifefish is one of 12,519 species in the app.