HomeFish encyclopediaRay-finned fishesCatfishAirbreathing catfishesBighead catfish Bighead catfish (Clarias macrocephalus) Scientific name: Clarias macrocephalus G?nther, 1864 The Bighead catfish (Clarias macrocephalus) is a freshwater fish of the family Clariidae. Native range: Asia, Thailand to Viet Nam. Introduced to China, Malaysia, Guam and the Philippines. BiologyLives in lowland wetlands and rivers. Occurs in shallow, open water and is capable of lying buried in mud for lengthy period if ponds and lakes evaporate during dry seasons. Can move out of the water using its extended fins. Found in medium to large-sized rivers, stagnant water bodies including sluggish flowing canals and flooded fields of the Mekong. Spawns in small streams. Feeds on aquatic insects, young shrimps and small fishes. In Thailand and Laos, this fish is considered to be better and more nourishing than Clarias batrachus; uncommon in Laos but common in Thailand; thought wrongly as female of Clarias batrachus in Thailand (Ref 2686). Important foodfish and in pond cultures. Marketed live, fresh and frozen; consumed fried, broiled and baked. CultivSource: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameClarias macrocephalusFamilyClariidae (Airbreathing catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length120Depth range1 m (3 ft)EnvironmentFreshwater; brackish; benthopelagic; potamodromous; depth range 1 - ? mClimateTropicalDistributionAsia: Thailand to Viet Nam. Introduced to China, Malaysia, Guam and the Philippines.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; aquaculture: commercialResilienceHigh, minimum population doubling time less than 15 months (Assuming tm=1; Fec=800-14,000) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026