Walking catfish
A Southeast Asian air-breathing catfish known for moving across land and surviving out of water.
The walking catfish is a tropical freshwater species native to maritime Southeast Asia. It is famous for its ability to traverse dry ground using pectoral fins and can survive outside water for up to eighteen hours.
- Can survive out of water for up to 18 hours.
- Moves across land using pectoral fins and wiggling motions.
- Native to Java, Indonesia, but invasive in Florida.
- Lacks an adipose fin, unlike many other catfish species.
- Common food source in Southeast Asia under names like lele.
What it is
The walking catfish is a tropical freshwater animal with an elongated body. It typically displays gray or brownish coloring with small white spots along its sides. The skin lacks scales but features a protective mucus layer. Long dorsal and anal fins run along the back and belly, while sensory barbels help it navigate. It possesses a thornlike spine behind its fins that serves as a defense mechanism against predators.
Where it lives
This species originates from the Indonesian island of Java. It has been introduced widely across Asia and beyond. In the United States, populations exist in Florida, with reports from California, Connecticut, Georgia, Massachusetts, and Nevada. A specimen was also recovered from the River Tonge in Bolton, England, in 2017. Taxonomic confusion often links it with related species in India and Indochina.
How it lives
It thrives in stagnant, low-oxygen waters like muddy ponds, ditches, and swamps. The fish spends most time near the bottom but surfaces to gulp air directly. It is omnivorous, consuming smaller fish, molluscs, invertebrates, detritus, and aquatic plants. Its voracious appetite allows it to outcompete native species when introduced to new environments.
Fish and people
In Indonesia, it is called lele and forms the basis of dishes like pecel lele. Thailand refers to it as pla duk dan, often sold grilled by street vendors. In the Philippines, locals call it hito. It is also kept in aquariums, where color variations like calico patterns are common. However, its aggressive nature means it cannot share tanks with small fish.
Status and threats
It is considered invasive outside its native range due to its hardiness and predatory habits. In Florida, it damages aquaculture farms by eating stocked fish. Farmers have installed fences to protect their ponds, and authorities ban possession to prevent further spread. Its ability to survive out of water facilitates accidental transport and establishment in new areas.
Questions people ask about Walking catfish
How does the walking catfish move on land?
It uses its pectoral fins to stay upright while making snakelike wiggling movements. This allows it to traverse dry ground to find new water sources or food when its current habitat dries up.
Why is it considered dangerous to handle?
It has embedded thornlike spines hidden behind its fins. These defensive mechanisms can cause injury if the fish is handled carelessly, so caution is required during fishing or tank maintenance.
What does this catfish eat in the wild?
It is an omnivore that feeds rapidly on smaller fish, molluscs, invertebrates, detritus, and aquatic weeds. This voracious diet makes it harmful to native ecosystems when introduced elsewhere.
Is it safe to keep in a home aquarium?
It requires a large tank with well-rooted plants and shade structures. Small tankmates will be eaten, so it must be housed alone or with larger fish. Color variations like calico are popular in the trade.
Good reading and sources
- Walking catfish on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Walking catfish", 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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