HomeFish encyclopediaRay-finned fishesCatfishBagrid catfishesTwospot catfish Twospot catfish (Mystus nigriceps) Scientific name: Mystus nigriceps Valenciennes, 1840 The Twospot catfish (Mystus nigriceps) is a freshwater fish of the family Bagridae. In the aquarium it needs water at 20–26°C (68–79°F). Native range: Asia, Mekong basin, Malaysia and Indonesia. Twospot catfish care at a glanceTemperature20–26°C (68–79°F) BiologyFontanel confined to anterior half of head; long adipose fin separated from dorsal-fin base; over 40 gill rakers on lower arm of first arch.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMystus nigricepsFamilyBagridae (Bagrid catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length19.8EnvironmentFreshwater;; pH range: 6.0 - 7.0; dH range: 5 - 19 demersal; potamodromousClimateTropicalDistributionAsia: Mekong basin, Malaysia and Indonesia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming Fec SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026