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Porthole catfish (Dianema longibarbis) — Callichthyidae

Porthole catfish

Dianema longibarbis

The Porthole catfish (Dianema longibarbis) is a freshwater fish of the family Callichthyidae that grows up to 10 cm.

Length
9.8 cm
Water
Freshwater
Diet
Omnivore
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless

Description

The porthole catfish is an armoured catfish (Callichthyidae) from fresh water of the western Amazon basin in South America. The species grows to about 10 cm and has an elongate, yellow-brown body with two rows of bony plates, long barbels and a row of dark spots along the flank. As a gregarious bottom-dweller it roots through soft sand in search of worms, larvae and detritus and can gulp air at the surface. The fish is harmless to humans and is known from the aquarium trade.

Frequently asked questions

How do you recognise the Porthole catfish?

The Porthole catfish has a torpedo-shaped body, is mainly brown and shows a spots pattern.

Where does the Porthole catfish live?

The Porthole catfish lives in fresh water and is mostly found around sand or mud bottom.

How big does the Porthole catfish get?

The Porthole catfish grows to a maximum of about 10 cm.

Is the Porthole catfish dangerous to humans?

No, the Porthole catfish is harmless to humans.

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All data

Identification

Dutch name
Patrijspoort-pantsermeerval sourced
English name
Porthole catfish sourced
Scientific name
Dianema longibarbis
Family
Callichthyidae
Other names
Porthole catfish; Slender catfish verified

Appearance

Size class
Small verified
Max length (cm)
9.8 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown sourced
Pattern
Spots sourced
Tail shape
Forked inferred
Barbels
Yes sourced

Habitat & distribution

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

Behaviour & biology

Diet
Omnivore inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred

For anglers

Fishing method
Klein van stuk en nauwelijks een hengelsportdoel; wordt vooral incidenteel of als aasvis gevangen. 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 Dianema

More from the family Callichthyidae

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