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Black lancer catfish (Bagrichthys macracanthus) — Bagridae

Black lancer catfish

Bagrichthys macracanthus
Family: Bagridae

The Black lancer catfish (Bagrichthys macracanthus) is a freshwater fish of the family Bagridae that grows up to 25 cm.

Length
25 cm
Water
Freshwater
Diet
Carnivore
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Venomous / poisonous
Range
Asia: Cambodia, Indonesia, Laos, Malaysia, Thailand

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Description

The black lancer catfish is a bagrid catfish (Bagridae) from fresh water of Sundaland in Southeast Asia. The species grows to about 20 cm and has an elongate, velvet-black body with barbels and a strikingly tall, lance-shaped dorsal fin. As a nocturnal bottom-dweller it searches slow-flowing rivers for insect larvae, worms and detritus. The stout, serrated dorsal and pectoral spines are venomous and can give a painful puncture wound.

Frequently asked questions

How do you recognise the Black lancer catfish?

The Black lancer catfish has an elongate, eel-like body and is mainly black. Bears venomous spines or tissue; handle with great care.

Where does the Black lancer catfish live?

The Black lancer catfish lives in fresh water and is mostly found around sand or mud bottom. Asia: Cambodia, Indonesia, Laos, Malaysia, Thailand

How big does the Black lancer catfish get?

The Black lancer catfish grows to a maximum of about 25 cm.

Is the Black lancer catfish dangerous to humans?

The Black lancer catfish is venomous — handle spines with care and seek medical help after a sting if needed. For a sting from a fin spine: rinse the wound, remove any visible spine fragments and immerse the part for 30-90 minutes in water as hot as can be tolerated (about 45 C) to break down the venom. The pain can be severe. For marked swelling, a retained spine or signs of infection seek medical care and check tetanus status.

More photos

Black lancer catfish (Bagrichthys macracanthus) — Bagridae — 2
Florida Museum of Natural History Ichthyology (CC BY-NC 4.0) via GBIF — UF
Black lancer catfish (Bagrichthys macracanthus) — Bagridae — 3
iNaturalist ((c) M. Afrizal Rizky, some rights reserved (CC BY-NC))
Black lancer catfish (Bagrichthys macracanthus) — Bagridae — 4
iNaturalist ((c) Muhammad Iqbal, some rights reserved (CC BY-NC))
Black lancer catfish (Bagrichthys macracanthus) — Bagridae — 5
Wikimedia Commons — Chattarin patinattang (CC BY-SA 4.0)
Fin

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All data

Identification

English name
Black lancer catfish sourced
Scientific name
Bagrichthys macracanthus
Family
Bagridae

Appearance

Size class
Medium verified
Max length (cm)
25.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Black sourced
Tail shape
Forked inferred
Barbels
Yes sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Natural range
Asia: Cambodia, Indonesia, Laos, Malaysia, Thailand sourced
Origin
Native inferred

Behaviour & biology

Diet
Carnivore inferred
Diet (detail)
Small fishes, crustaceans and invertebrates inferred
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
Special features
Bears venomous spines or tissue; handle with great care. inferred

For anglers

Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous verified
First aid
For a sting from a fin spine: rinse the wound, remove any visible spine fragments and immerse the part for 30-90 minutes in water as hot as can be tolerated (about 45 C) to break down the venom. The pain can be severe. For marked swelling, a retained spine or signs of infection seek medical care and check tetanus status. sourced

Status & sources

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

Same genus Bagrichthys

More from the family Bagridae

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