Home · Apteronotidae · Tubesnout knifefish
Tubesnout knifefish (Platyurosternarchus macrostomus) — Apteronotidae

Tubesnout knifefish

Platyurosternarchus macrostomus
Family: Apteronotidae

The Tubesnout knifefish (Platyurosternarchus macrostomus) is a fish of the family Apteronotidae that grows up to 30 cm.

Length
30 cm
Activity
Nocturnal
Substrate
Mixed bottom
Danger
Harmless

Want the complete picture on the Tubesnout knifefish?

Get the app

Description

The tubesnout knifefish is a weakly electric knifefish (Apteronotidae) from fresh water of the Amazon and Orinoco basins in South America. The species grows to about 30 cm and has an elongate, brown body with a strikingly long, tubular snout and a long anal fin along the belly with which it swims smoothly forwards and backwards. As a nocturnal bottom-dweller it explores turbid water with a weak electric field; the current cannot be felt by humans. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Tubesnout knifefish?

The Tubesnout knifefish is mainly brown.

Where does the Tubesnout knifefish live?

The Tubesnout knifefish is mostly found around mixed bottom.

How big does the Tubesnout knifefish get?

The Tubesnout knifefish grows to a maximum of about 30 cm.

Is the Tubesnout knifefish dangerous to humans?

No, the Tubesnout 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.

Fin

Want the complete picture on the Tubesnout knifefish?

Point your camera at the fish and Fin names the species in seconds. Free, and the Tubesnout knifefish is one of 12,519 species in the app.

Get the app →

All data

Identification

English name
Tubesnout knifefish sourced
Scientific name
Platyurosternarchus macrostomus
Family
Apteronotidae

Appearance

Size class
Medium
Max length (cm)
30 sourced
Dominant colour
Brown sourced
Tail shape
Straight inferred

Habitat & distribution

Substrate
Mixed bottom sourced
Origin
Native inferred

Behaviour & biology

Territorial
No inferred
Activity
Nocturnal sourced
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
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. verified

Status & sources

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

More from the family Apteronotidae

Fin

Want the complete picture on the Tubesnout knifefish?

Point your camera at the fish and Fin names the species in seconds. Free, and the Tubesnout knifefish is one of 12,519 species in the app.

Get the app →
Is this the Tubesnout knifefish? Get the app