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Nonn Panitvong (1) Kamphol Udomrittiruj (1) Fishes of Mainland Southeast Asia (2)

Description: Dorsal spines (total): 1; Dorsal soft rays (total): 4 - 5; Anal soft rays: 8 - 11; Vertebrae: 31 - 35. Can be differentiated from its congeners in the following characters: lacking distinct serrae on posterior edge of pectoral spine; adipose fin with moderately long base, its length 13.4-16.7 %SL; eye diameter 7-10 %HL; length of nasal barbel 38-57 %HL; tip of snout noticeably in front of apex of lower jaw; large anterior and posterior nostrils present, closely situated together and separated only by base of nasal barbel; caudal fin with 7+7-8 rays; branchiostegal rays 6-7; Colouration: A light yellow snout with a sharp contrasted edge; colour pattern consisting of dorsal and ventral light yellow patches on the body that sometimes coalesce at mid-height of the flank. Habitat: Pseudobagarius inermis has been found in various habitats from swift creek to riffles in streams and rapids in large rivers. All habitats had in common a stony (gravel to boulder) substrate and relatively swift current. In most of them the water was clear in the dry season. Etymology: The genus name Pseudobagarius: Tautonymous with Akysis pseudobagarius, proposed for members of the “pseudobagarius group” of Akysis; pseudo-, false, referring to striking (but phylogenetically false) resemblance to the sisorid genus Bagarius. The specific name inermis: unarmed, referring to lack of serrations on pectoral spine.

None

Akysis inermis

Akysidae

Asia: Xe Banghiang and Xe Kong drainages of the Mekong River drainages in southern Laos. Type locality: Laos: Attapeu province: unnamed creek entering Xe Kaman from the north at proposed Xe Kaman dam site, 14º57'40"N, 107º09'16"E.

3.5cm (1¼ins)

18-24°C (63-75°F)

6.5-7.5.

Ferraris, C.J. Jr. 2007 Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Froese, R. and D. Pauly. Editors. 2008. FishBase. World Wide Web electronic publication. www.fishbase.org, version (09/2008).
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.