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Esmeraldas banded knifefish (Gymnotus esmeraldas) — Gymnotidae

Esmeraldas banded knifefish

Gymnotus esmeraldas
Family: Gymnotidae

The Esmeraldas banded knifefish (Gymnotus esmeraldas) is a freshwater fish of the family Gymnotidae that grows up to 31 cm.

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

Description

The Esmeraldas banded knifefish is a weakly electric knifefish (Gymnotidae) from fresh water of the coastal region of northwestern South America. 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 Esmeraldas banded knifefish?

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

Where does the Esmeraldas banded knifefish live?

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

How big does the Esmeraldas banded knifefish get?

The Esmeraldas banded knifefish grows to a maximum of about 31 cm.

Is the Esmeraldas banded knifefish dangerous to humans?

No, the Esmeraldas banded knifefish is harmless to humans.

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All data

Identification

Dutch name
Esmeraldas-mesaal sourced
English name
Esmeraldas banded knifefish sourced
Scientific name
Gymnotus esmeraldas
Family
Gymnotidae

Appearance

Size class
Medium verified
Max length (cm)
30.9 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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