Giant catfish
Large estuarine catfish found across the Indo-Pacific.
The giant catfish is a large member of the Ariidae family, inhabiting estuaries and coastal waters from the Red Sea to Australia. It grows up to 185 cm and supports commercial and recreational fisheries throughout its range.
- Reaches a maximum length of 185 cm
- Inhabits depths from 10 to 195 metres
- Spawns annually between April and August
- Found from the Red Sea to Australia
- Harvested for both food and sport
What it is
This species is a substantial catfish belonging to the family Ariidae. It features a robust body typical of sea catfishes. Adults can reach a total length of 185 cm, though most individuals measure around 70 cm. The fish possesses the characteristic barbels of its order, which help it locate food in murky waters. Its colouration and specific fin structures allow it to blend into sandy or muddy substrates. It is distinct from freshwater relatives due to its tolerance for saline environments.
Where it lives
The distribution of this catfish spans a vast area of the Indo-Pacific. It is present in the northwestern Indian Ocean and the Red Sea. Populations extend eastward to Japan, Australia, and Polynesia. In Southeast Asia, it occurs in southern Vietnam, particularly within the Mekong Delta. The species primarily inhabits estuaries where river water mixes with the sea. It also enters freshwater bodies on occasion. Individuals dwell at depths ranging from 10 to 195 metres.
How it lives
As a bottom dweller, the giant catfish feeds on a wide variety of prey. Its diet includes crustaceans such as crabs, shrimp, prawns, and stomatopods. It also consumes worms, finfish, cephalopods, sea cucumbers, and mollusks. This opportunistic feeding behaviour allows it to thrive in diverse coastal habitats. The fish uses its sensory barbels to detect movement and scent in the sediment. While specific schooling habits are not detailed, its presence in commercial catches suggests it may form aggregations in productive estuarine zones.
Breeding and life cycle
Reproductive activity occurs during the warmer months of the year. Spawning takes place between April and August. This timing likely coincides with optimal water temperatures and food availability for the developing young. Like other members of the Ariidae family, males may play a role in protecting the eggs or fry, although specific parental behaviours for this species are not detailed in the available data. The breeding cycle ensures that juveniles have access to abundant resources during their early growth stages.
Fish and people
Fishers target this species for both commercial and recreational purposes. Its large size makes it a prized catch for sport anglers. In commercial operations, it is harvested for food. The meat is valued in local markets across its range. In some regions, it is known by local names such as khagga. The fish supports livelihoods in coastal communities where estuarine fishing is a primary economic activity. Its presence in the Mekong Delta highlights its importance to regional fisheries.
Questions people ask about Giant catfish
How big does the giant catfish get?
The maximum recorded total length is 185 cm. However, most individuals encountered are smaller, typically reaching a length of around 70 cm.
Where does the giant catfish live?
It lives in estuaries and occasionally freshwater bodies. Its range includes the Red Sea, Indian Ocean, Japan, Australia, Polynesia, and Vietnam.
What does the giant catfish eat?
Its diet consists of crustaceans like crabs and shrimp, as well as worms, finfish, cephalopods, sea cucumbers, and mollusks.
When does the giant catfish spawn?
Spawning occurs between April and August. This period likely provides favourable conditions for the survival of eggs and young fish.
Good reading and sources
- Giant catfish on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Giant 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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