分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Akysidae (Stream catfishes)
河鯰科 (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.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
Asia: Xe Banghiang and Xe Kong drainages of the Mekong River drainages in southern Laos.
亞洲: 在寮國南部的 Xe Banghiang 與湄公河流域的 Xe Kong 流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 3.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 37037)
簡短描述
型態特徵 | 形態測量圖
背棘 (總數): 1; 背的軟條 (總數): 4-5; 臀鰭軟條: 8 - 11; 脊椎骨: 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).
能在下列的特徵被與它的同類區別: 在胸棘的後緣上的缺乏明顯的鋸齒; 用中等長度的基底，它的長度 13.4-16.7% SL 的脂鰭; 眼直徑 7-10% HL; 鼻觸鬚 38-57% HL 的長度; 吻尖顯著地在下頜的尖頂之前; 大的前面與後面的鼻孔呈現, 接近地一起位於而且只有被鼻觸鬚的基底分開; 尾鰭有 7+7-8 鰭條; 鰓條骨 6-7; 一淡黃色的吻部有一個銳利的被對比的邊緣; 包含在有時合併的身體上的背部與腹的淡黃色的區塊的彩色斑紋在-之中側面的高度.(參考文獻 37037)
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).
Akysis inermis 已經在從迅急的小溪到急流被在大河中的溪流與急流中發現於各種不同的棲息地。 所有的棲息地有在普遍一個多石 (礫石到大圓石) 底部與相當急流的水流中。 在大部分的他們水是清澈的乾季時.(參考文獻 37037)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
亞洲: 在寮國南部的 Xe Banghiang 與湄公河流域的 Xe Kong 流域。
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)
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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=0.00389 (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).
營養階層 (Ref.
69278): 3.4 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
