HomeFish encyclopediaRay-finned fishesCatfishArmorhead catfishesHelmet Catfish Helmet Catfish (Cranoglanis bouderius) Scientific name: Cranoglanis bouderius Richardson, 1846 Photo: https://www.planetcatfish.com/common/image.php?species=cranoglanis_bouderius&image_id=4278 The Helmet Catfish (Cranoglanis bouderius) is a freshwater fish of the family Cranoglanididae. Native range: Asia, Kwangsi-Province in China. BiologyDorsal spines: 2; Dorsal soft rays: 6; Anal soft rays: 28 - 29. No scale, straight and complete lateral line. Short dorsal fin, the highest ray almost equals the length of the head. Long maxillary barbel reaches to the middle of the pectoral fin. Swimming bladder is heart-shaped, divided into three chambers. Olive colored body, gradually become white starting from the stomach. All fins white gray.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCranoglanis bouderiusFamilyCranoglanididae (Armorhead catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length43.0EnvironmentFreshwater; demersalClimateTropicalDistributionAsia: Kwangsi-Province in China.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026