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Slender antenna catfish (Heptapterus tenuis) — Heptapteridae

Slender antenna catfish

Heptapterus tenuis
Family: Heptapteridae

The Slender antenna catfish (Heptapterus tenuis) is a fish of the family Heptapteridae that grows up to 9 cm.

Length
8.5 cm
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Substrate
Mixed bottom
Danger
Harmless
Range
Southeastern South America
Edibility
Not eaten

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Description

The slender antenna catfish is a small catfish (Heptapteridae) from fresh water of southeastern South America. The species grows to about 9 cm and has a very elongate, scaleless, eel-like body with three pairs of barbels and a continuous, low fin margin around the tail. As a nocturnal bottom-dweller it hides by day among stones and leaf litter of streams and searches at night for insect larvae and small invertebrates. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Slender antenna catfish?

The Slender antenna catfish is mainly brown and shows a plain pattern. Eel-like naked body with three pairs of barbels; nocturnal catfish

Where does the Slender antenna catfish live?

The Slender antenna catfish is mostly found around mixed bottom. Southeastern South America

How big does the Slender antenna catfish get?

The Slender antenna catfish grows to a maximum of about 9 cm. On average the species is around 5 cm.

Is the Slender antenna catfish dangerous to humans?

No, the Slender antenna catfish 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 Slender antenna catfish edible?

The Slender antenna catfish is not usually eaten.

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All data

Identification

English name
Slender antenna catfish sourced
Scientific name
Heptapterus tenuis
Family
Heptapteridae

Appearance

Size class
Small
Max length (cm)
8.5 verified
Average length (cm)
5.1 sourced
Dominant colour
Brown sourced
Pattern
Plain sourced
Tail shape
Straight inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
Yes sourced
Dorsal fins
One continuous sourced
Dorsal spines
No sourced

Habitat & distribution

Substrate
Mixed bottom sourced
Natural range
Southeastern South America sourced
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Insect larvae and small invertebrates inferred
Social behaviour
Solitary sourced
Territorial
No sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Nocturnal small stream catfish; present year-round. sourced
Special features
Eel-like naked body with three pairs of barbels; nocturnal catfish sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
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

Same genus Heptapterus

More from the family Heptapteridae

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