Fin's Fish Guide
The Tail-fin knifefish (Brachyhypopomus pinnicaudatus) is a freshwater fish of the family Hypopomidae that grows up to 19 cm.
Description
The tail-fin knifefish is a weakly electric knifefish from fresh water of northern South America. The species grows to about 19 cm and has an elongate body with a long, continuous anal fin with which it swims forward and backward in undulating fashion. With a weak electric organ in the tail it generates an electric field to navigate and communicate in turbid, nocturnal water. It feeds on insect larvae and small invertebrates. The fish is harmless to humans. The IUCN has not evaluated the species.
Frequently asked questions
How do you recognise the Tail-fin knifefish?
The Tail-fin knifefish has an elongate, eel-like body, is mainly brown and shows a vertical stripes pattern. Long anal fin and a weak electric tail organ; nocturnal navigation
Where does the Tail-fin knifefish live?
The Tail-fin knifefish lives in fresh water and is mostly found around mixed bottom. Northern South America
How big does the Tail-fin knifefish get?
The Tail-fin knifefish grows to a maximum of about 19 cm.
Is the Tail-fin knifefish dangerous to humans?
No, the Tail-fin 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.
Is the Tail-fin knifefish edible?
The Tail-fin knifefish is not usually eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Brachyhypopomus
More from the family Hypopomidae
Want the complete picture on the Tail-fin knifefish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Tail-fin knifefish is one of 12,519 species in the app.