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EveryFish
Lepidocephalichthys guntea (Hamilton, 1822)

Guntea loach

A small Asian loach that breathes through its gut to survive in poor water.

Photo: Sir Francis Day, Public domain, via Wikimedia Commons

The guntea loach is a cobitid species native to southern and south-eastern Asia. It reaches 15 centimetres in length and survives in stagnant waters by using its intestines for breathing.

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  • Reaches a maximum length of 15 centimetres.
  • Native to southern and south-eastern Asia.
  • Uses intestines to breathe in low-oxygen water.
  • Found in the aquarium trade.
  • Belongs to the family Cobitidae.

What it is

This fish is a type of loach belonging to the family Cobitidae. It grows to a maximum size of 15 centimetres. The body is adapted for life in low-oxygen conditions because it can absorb air through its intestinal lining. This unique trait allows it to thrive where other fish might struggle.

Where it lives

The species originates from regions across southern and south-eastern Asia. It inhabits both slow-moving streams and still pools. Its ability to breathe via the gut means it tolerates a wide range of water qualities, including those with very little dissolved oxygen.

How it lives

These loaches are known for their scavenging habits in the wild. They move between different types of water bodies, from quiet backwaters to gently flowing currents. Their special respiratory system lets them survive in environments that would be fatal to many other freshwater species.

Breeding and life cycle

Details on how this fish spawns or raises its young are not provided in the available records.

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

Fish and people

The guntea loach appears in the aquarium trade as an ornamental fish. Its primary documented use is within the hobbyist market.

Status and threats

There is no data on population numbers, overfishing risks, or habitat loss affecting these loaches in their native range.

Questions people ask about Guntea loach

How does the guntea loach survive in bad water?

It uses its intestines to breathe air. This adaptation allows it to live in stagnant or flowing environments where oxygen levels are too low for normal gill breathing.

What is the scientific name of the guntea loach?

Its binomial name is Lepidocephalichthys guntea. It is also commonly called the peppered loach or scavenger loach in English-speaking contexts.

Where is this fish originally from?

The species is native to southern and south-eastern Asia. It has been introduced to the aquarium trade outside this region.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Lepidocephalichthys guntea", 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.

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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