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EveryFish
Asian Stinging catfish, Fossil cat

Asian stinging catfish

A small freshwater catfish with a painful sting

Photo: Maxim Gavrilyuk, CC BY-SA 3.0, via Wikimedia Commons

The Asian stinging catfish is a small species found across South and Southeast Asia. It lives in stagnant waters and muddy rivers, tolerating low oxygen levels. Local communities value it for food and traditional medicine, though its venomous spine requires careful handling.

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  • Grows to a maximum length of 30 cm
  • Delivers a painful sting via pectoral fin spine
  • Breeds in confined waters during the monsoon
  • Tolerates slightly brackish and low-oxygen water
  • Introduced to the Tigris River Basin in Iran

What it is

This fish belongs to the air sac catfish group. It has a slender body that reaches a maximum length of thirty centimetres. The most notable feature is a gland on its pectoral fin spine. This gland releases poison that causes severe pain if it stings a human. Its colouration helps it blend into muddy environments where it typically hides.

Where it lives

Native populations exist throughout South Asia, including India, Bangladesh, Pakistan, Nepal, Sri Lanka, and Bhutan. It also lives in Thailand and Myanmar. Humans have introduced it to the Tigris River Basin in western Iran. The fish prefers stagnant or slow-moving water bodies such as ponds, ditches, swamps, and marshes. It can survive in muddy rivers and tolerates slightly brackish conditions.

How it lives

The species is omnivorous, eating both plant and animal matter found in its habitat. It thrives in waters with low oxygen levels due to its specialised air sacs. This adaptation allows it to live in derelict ponds and ditches where other fish might perish. It remains mostly hidden in mud or vegetation during the day to avoid predators and conserve energy.

Breeding and life cycle

Spawning occurs mainly during the monsoon season when water levels rise. The fish uses confined waters for reproduction. If sufficient rainwater collects in ponds or ditches outside the main monsoon period, it can breed then as well. This flexibility allows populations to recover quickly in temporary water bodies that fill with seasonal rains.

Asian stinging catfish
A drawing made by EveryFish from what this page says. It is a diagram, not a picture of the real fish.

Fish and people

Local commercial fisheries target this catfish due to high demand. People believe it has medicinal value, which drives its market price. Farmers raise it in ponds to meet consumption needs. It also appears in the aquarium trade, though handlers must be cautious. The painful sting from its pectoral spine poses a risk to fishermen and hobbyists alike.

Asian stinging catfish by AravindManoj
Asian stinging catfish by AravindManoj. Photo: AravindManoj, CC BY-SA 4.0, via Wikimedia Commons

Questions people ask about Asian stinging catfish

Is the Asian stinging catfish dangerous to humans?

Yes, it can deliver a painful sting. A gland on its pectoral fin spine releases poison that causes extreme pain. Care is needed when handling this fish in fisheries or aquariums to avoid injury from the sharp spine.

Where does this catfish live?

It is native to South and Southeast Asia, including India, Bangladesh, and Thailand. It prefers ponds, swamps, and muddy rivers. It has also been introduced to western Iran. The fish tolerates slightly brackish water and low oxygen levels.

Why is this fish farmed and caught?

It is an important part of local commercial fisheries. People value it for food and its alleged medicinal properties. Farmers raise it in ponds because it can survive in confined, low-quality water, making it a resilient choice for aquaculture.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Heteropneustes fossilis", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.

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Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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