分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cypriniformes (Carps) >
Gastromyzontidae (Hillstream loaches)
Etymology: elongata: Specific name from the Latin elongatus which means elongate.
Eponymy: Lieutenant-Colonel Robert Beresford Seymour Sewell CIE. [...] (Ref. 128868), visit book page.
More on author: Roberts.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的. 熱帶
Asia: Se Kong of the Mekong basin.
亞洲: 湄公河流域的 Se Kong。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 7.3 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: 35 - 37. The following combination of characters distinguished this species from its congeners: body without dark stripes; paired fins with no concentric bands; pelvic fin reaching beyond anus; general appearance elongated; body width at the origin of dorsal fin 20.7-24.4% SL; caudal peduncle depth 8.0-9.6 % SL; caudal peduncle length 1.0-1.2 times in its depth; predorsal length 46.5-49.5% SL; pelvic-fin origin in front of dorsal-fin origin; absence of cavity around mouth; skin-fold between oropectoral membrane and ventral surface of head running from pectoral-fin origin to second rostral barbel; tubercles on top of head concentrated on lateral parts of snout; absence of large tubercles on branched pectoral-fin rays 15-21; and 65-70 lateral line scales. Very dark, almost black when alive; color pattern changes after preservation (Ref. 40433).
Body shape (shape guide): elongated.
下列的組合特徵區別了來自它的同類的這種: 身體沒有深色的斑紋; 偶鰭沒有同中心的條紋; 超過肛門的腹鰭; 一般的外表延長; 在背鰭起點 20.7-24.4% SL 的身體寬度; 尾柄深度 8.0-9.6% SL; 尾柄長度 1.0-1.2 倍它的深度; 前背的長度 46.5-49.5% SL; 在背鰭起點之前的腹鰭起點; 嘴的周圍缺乏洞; 皮膚-在 oropectoral 薄膜與從對第二的嘴觸鬚的胸鰭起源延續的頭部的腹面之間摺疊; 在頭頂上的小瘤專注於吻的側面部份了; 在分枝的胸鰭鰭條 15-21 上缺乏大的瘤結; 而且 65-70個側線鱗片。 非常深色的, 幾乎黑色的當活著的; 彩色斑紋在保存之後改變。 (參考文獻 40433)
Occurs in moderately high gradient forested montane stream with large boulders, a coarse gravel or sandy bottom and some logs. Also found in an extremely high gradient, tumultuous mountain stream with huge boulders and coarse gravel bottom.
用大圓石, 一個粗礫石或沙質底部與一些圓木出現於一般高落差的山區森林水流。 用極大的大圓石與粗礫石底部也發現於一個非常高落差又吵鬧的山地溪流。
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
亞洲: 湄公河流域的 Se Kong。
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 2025-2 (Global))
近危 (NT) ; Date assessed: 19 February 2011
人類使用
工具
特別的報告
下載 XML
網路資源
基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00285 - 0.01461), 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 (參考文獻
69278): 3.6 ±0.4 se; based on size and trophs of closest relatives
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
🛈
