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Gangetic mystus (Mystus cavasius) — Bagridae

Gangetic mystus

Mystus cavasius
Family: Bagridae
LC · Least Concern

The Gangetic mystus (Mystus cavasius) is a brackish-water fish of the family Bagridae that grows up to 40 cm.

Length
40 cm
Water
Brackish
Depth
0–? m
Diet
Carnivore
Behaviour
Small groups
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Venomous / poisonous
Range
South Asia
Edibility
Commonly eaten

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Description

The Gangetic mystus is a bagrid catfish from South Asia, occurring in Pakistan, Nepal, India, Sri Lanka and Myanmar, in major river systems such as the Indus, the Ganges-Brahmaputra and the Irrawaddy. The species grows to about 40 cm and has an elongate, greyish body with a midlateral stripe and a dark spot before the dorsal fin; the very long barbels reach beyond the tail base in adults. It lives in fresh and brackish tidal water and can breathe air. The pectoral and dorsal fin spines are venomous and can inflict a painful wound. It is a valued food fish; the IUCN assesses the species as Least Concern (LC).

Frequently asked questions

How do you recognise the Gangetic mystus?

The Gangetic mystus has an elongate, eel-like body, is mainly silver-grey and shows a horizontal stripes pattern. Very long whisker-like barbels; venomous pectoral and dorsal fin spines; can breathe air

Where does the Gangetic mystus live?

The Gangetic mystus lives in brackish water and is mostly found around sand or mud bottom. South Asia

How big does the Gangetic mystus get?

The Gangetic mystus grows to a maximum of about 40 cm.

Is the Gangetic mystus dangerous to humans?

The Gangetic mystus is venomous — handle spines with care and seek medical help after a sting if needed. After a fin-spine sting, immerse the affected part in hot water (about 45 degrees) for 30-90 minutes to break down the venom; clean the wound and seek medical help for severe pain or swelling.

Is the Gangetic mystus edible?

Yes, the Gangetic mystus is commonly eaten.

More photos

Gangetic mystus (Mystus cavasius) — Bagridae — 2
iNaturalist ((c) ARNAB KUMAR SAMANTA, some rights reserved (CC BY-NC))
Gangetic mystus (Mystus cavasius) — Bagridae — 3
Wikimedia Commons — Robert Mintern (Public domain)
Gangetic mystus (Mystus cavasius) — Bagridae — 4
iNaturalist ((c) gopikaranjith, some rights reserved (CC BY-NC))
Gangetic mystus (Mystus cavasius) — Bagridae — 5
iNaturalist ((c) Aniruddha Singhamahapatra, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Gangetic mystus verified
Scientific name
Mystus cavasius
Family
Bagridae
Other names
Gangetic mystus verified

Appearance

Size class
Medium verified
Max length (cm)
40.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey inferred
Pattern
Horizontal stripes sourced
Tail shape
Forked inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
Yes sourced
Dorsal fins
One continuous sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
0 sourced
Natural range
South Asia verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small fishes, insects and crustaceans inferred
Social behaviour
Small groups inferred
Territorial
No sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Spawns in the rainy season in shallow water. sourced
Special features
Very long whisker-like barbels; venomous pectoral and dorsal fin spines; can breathe air sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bottom fishing with worm or baitfish in rivers. sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced
First aid
After a fin-spine sting, immerse the affected part in hot water (about 45 degrees) for 30-90 minutes to break down the venom; clean the wound and seek medical help for severe pain or swelling. sourced

Status & sources

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

Same genus Mystus

More from the family Bagridae

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