分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | 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
生態學
; 淡水 居於水底的. 熱帶
Asia: Se Kong drainage in Laos and Vietnam.
亞洲: 在寮國與越南的 Se Kong 流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 5.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 38650)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
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).
在組合特徵之後有別於其他 Sewellia 的種藉由: 身體有斑點的, 沒有深色的斑紋; 沒有同中心的條紋在偶鰭上; 腹鰭延伸到臀鰭起源; 在背鰭起點之下的腹鰭起點; 在雄性中的在第一個胸鰭鰭條上的細小瘤的小軟升高區塊; 在單一的胸鰭鰭條上的小瘤不增大; 嘴的周圍缺乏洞; 缺乏皮膚-在 oropectoral 薄膜與頭部的腹面之間摺疊; 而且 50-60個側線鱗片.(參考文獻 40433)
Inhabits rivers with rocky bottom, with gravel and stone and sometimes large boulders. River current is moderate to swift, but the gradient is moderate.
棲息於河有岩石的底部, 具有礫石與石頭或大圓石的地方。 河水流是適度的到湍急的，但是坡度是中等的。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
亞洲: 在寮國與越南的 Se Kong 流域。
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 19 February 2011
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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).
營養階層 (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
