分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
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.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 熱帶
Asia: Se Kong drainage in Laos and Vietnam.
亞洲: 在寮國的 Se Kong 分水嶺 (湄公河流域) 中的 Xe Nam Noi 下游與 Se Kaman 下游。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 5.4 cm SL 雄鱼/尚未辨别雌雄; (Ref. 38650)
简单描述
检索表 | 型态特徵 | 形态测量图
脊椎骨: 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).
有别于其他被已知来自老挝 (亚属 Diardichthys) 的 Sewellia 在它的华丽与最对比鲜明的颜色, 腹鳍达到或者部分重叠的臀鳍起源, 与胸鳍雄性有非常细小瘤的大又升高区块, 与通常较少的脊椎骨。 从接近地被讲越南种 (亚属 Sewellia) 的两者用腹鳍达到，否则部分重叠的臀鳍起源与非常细的小瘤在雄性与相似的脊椎骨数的胸鳍上在身体与偶鳍上它有一个完全不同的颜色, 在不一样非常灰白的背景上的非常小的深色斑点.(没有条纹在身体或胸鳍上) 胸鳍分支条 20-22; 腹鳍分支条 19.(参考文献 38650)
Inhabits rivers with rocky bottom, with gravel and stone and sometimes large boulders. River current is moderate to swift, but the gradient is moderate.
栖息于河有岩石的底部, 具有砾石与石头或大圆石的地方。 河水流是适度的到湍急的，但是坡度是中等的。
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
亞洲: 在寮國的 Se Kong 分水嶺 (湄公河流域) 中的 Xe Nam Noi 下游與 Se Kaman 下游。
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00268 - 0.01421), b=3.11 (2.91 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
