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Forest banded knifefish (Gymnotus sylvius) — Gymnotidae

Forest banded knifefish

Gymnotus sylvius
Family: Gymnotidae

The Forest banded knifefish (Gymnotus sylvius) is a freshwater fish of the family Gymnotidae that grows up to 42 cm.

Length
42 cm
Water
Freshwater
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless

Description

The Forest banded knifefish is a weakly electric knifefish (Gymnotidae) from fresh water of southeastern Brazil. The species grows to about 30 cm and has an elongate, laterally compressed, brown body with oblique dark bands 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 Forest banded knifefish?

The Forest banded knifefish has an elongate, eel-like body, is mainly brown and shows a vertical stripes pattern.

Where does the Forest banded knifefish live?

The Forest banded knifefish lives in fresh water and is mostly found around sand or mud bottom.

How big does the Forest banded knifefish get?

The Forest banded knifefish grows to a maximum of about 42 cm.

Is the Forest banded knifefish dangerous to humans?

No, the Forest banded knifefish is harmless to humans.

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All data

Identification

Dutch name
Bos-mesaal sourced
English name
Forest banded knifefish sourced
Scientific name
Gymnotus sylvius
Family
Gymnotidae

Appearance

Size class
Large verified
Max length (cm)
42.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown sourced
Pattern
Vertical bars sourced
Tail shape
Straight inferred

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Origin
Native inferred

Behaviour & biology

Territorial
No inferred
Activity
Nocturnal sourced
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred

For anglers

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

Same genus Gymnotus

More from the family Gymnotidae

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