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Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Etymology: inermis: The specific name is derived from the Latin inermis (unarmed), referring to the lack of serrations on the pectoral spine.
More on authors: Ng & Kottelat.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal. Tropical
Asia: Xe Banghiang and Xe Kong drainages of the Mekong River drainages in southern Laos.
Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Max length : 3.5 cm SL mâle / non sexé; (Ref. 37037)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 1; Rayons mous dorsaux (Total) : 4 - 5; Rayons mous anaux: 8 - 11; Vertèbres: 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; a light yellow snout with a sharp contrasted edge; color pattern consisting of dorsal and ventral light yellow patches on the body that sometimes coalesce at mid-height of the flank (Ref. 37037).
Body shape (shape guide): elongated; Cross section: compressed.
Akysis 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 (Ref. 37037).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628. (Ref. 58032)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.3 ±0.6 se; based on size and trophs of closest relatives
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (10 of 100).
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