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Cypriniformes (Carps) >
Gastromyzontidae (Hillstream loaches)
Etymology: speciosa: Specific name from the Latin speciosus which means beautiful, showy.
Eponymy: Lieutenant-Colonel Robert Beresford Seymour Sewell CIE. [...] (Ref. 128868), visit book page.
More on author: Roberts.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal. Tropical
Asia: Se Kong drainage in Laos and Vietnam.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 5.4 cm SL mâle / non sexé; (Ref. 38650)
Vertèbres: 31 - 32. Differs from other species of Sewellia by the following combination of characters: body spotted, without dark stripes; without concentric band on paired fins; pelvic fin reaching to anal-fin origin; pelvic-fin origin below dorsal-fin origin; small soft elevated patches of fine tubercles on first pectoral-fin rays in males; tubercles on simple pectoral-fin ray not enlarge; absence of cavity around mouth; absence of skin-fold between oropectoral membrane and ventral surface of head; and 50-60 lateral line scales (Ref. 40433).
Body shape (shape guide): elongated.
Inhabits rivers with rocky bottom, with gravel and stone and sometimes large boulders. River current is moderate to swift, but the gradient is moderate.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Roberts, T.R., 1998. Systematic revision of the balitorid loach genus Sewellia of Vietnam and Laos, with diagnoses of four new species. Raffles Bull. Zool. 46(2):271-288. (Ref. 38650)
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) |
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00646 (0.00283 - 0.01475), b=3.11 (2.91 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
3.5 ±0.4 se; based on size and trophs of closest relatives |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |