HomeFish encyclopediaRay-finned fishesCatfishAirbreathing catfishesSmoothhead catfish Smoothhead catfish (Clarias liocephalus) Scientific name: Clarias liocephalus Boulenger, 1898 The Smoothhead catfish (Clarias liocephalus) is a freshwater fish of the family Clariidae. In the aquarium it needs water at 22–28°C (72–82°F). Smoothhead catfish care at a glanceTemperature22–28°C (72–82°F) BiologyDorsal spines (total): 0; Dorsal soft rays (total): 67-79; Anal soft rays: 53 - 67; Vertebrae: 55 - 58. Pectoral fin spine with serrations on the inner and upward directed on the outer side. Head oval to rectangular dorsally; snout broadly rounded; eyes more laterally located. Frontal fontanelle intermediate between `knife-shaped' and `sole-shaped'; occipital fontanelle long and oval-shaped. Supraorbital and `dermosphenotic' bones generally joined above 150 mm SL and more dorsally placed. Tooth plates relatively broad. Pectoral spine relatively short; its outer side strongly serrated over entire length. Gill rakers short and far apart. Openings of secondary sensory canals regularly arranged on flanks.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameClarias liocephalusFamilyClariidae (Airbreathing catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length32.0EnvironmentFreshwater; demersalClimateTropicalDistributionAfrica: Lake Victoria, Edward, George, small lakes of Uganda, Lake Kivu, smaller lakes of Rwanda, Lake Tanganyika, Bangweulu-Moero system, in Malawi, Kagera, Malagarazi, Ruzizi and Tana Rivers. Cunene, Okavango, upper Zambezi, and Kafue systems, Zambian Congo, Central Africa Great Lakes.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026