分类 / Names
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Teleostei >
Siluriformes (Catfishes) >
Sisoridae (Sisorid catfishes) > Sisorinae
Etymology: Erethistoides: Greek, erethizo = that irritates + Greek, suffix oides = similar (Ref. 45335); ascita: From the Latin adjective ascitus, meaning strange, in reference to the unusual pattern of serration on the anterior edge of the pectoral spine.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的; pH range: 7.5 - 8.0. 热带; ? - 30°C (Ref. 55978)
Asia: Nepal.
亚洲: 尼泊尔。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 4.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 85009)
简单描述
检索表 | 型态特徵 | 形态测量图
脊椎骨: 27 - 30. Distinguished from congeners in having serrations on the anterior edge of the pectoral spine diverging at the distal quarter (vs. middle) and in having flattened and elongate plaque-like tubercles (vs. rounded tubercles) on the head and body. Both E. ascita and E. cavatura differ from E. montana and E. pipri in having a longer caudal peduncle (19.3-22.5% SL vs. 14.4-17.3). Both species differ further from E. montana in having a more slender body (body depth at anus 8.6-10.5% SL vs. 10.6-11.4) and from E. sicula by the absence (vs. present) of slight median depression on the lower lip margin. E. ascita differs further from E. cavatura in having the serrations on the anterior edge of the pectoral spine more sideways (vs. anteriorly) directed, a smaller eye (13.2-17.6% HL vs. 17.7-20.9) and nostrils (the length of the narial complex 53-75% of interorbital width vs. 77-90), and from E. sicula. In having a deeper caudal peduncle (5.4-6.2% SL vs. 4.1-5.1) (Ref. 55978).
与同类在头部与身体上在末梢部的四分之一 (vs. 中央) 分开并且有平而细长的像斑一样的小瘤 (vs. 圆形的小瘤) 的胸棘的前缘上有锯齿区分了。 E. ascita 和 E. cavatura 不同于 E. montana 与 E. pipri 在有一个方面较长的尾柄.(19.3-22.5% SL vs.14.4-17.3) 两个种都在有一个方面进一步不同于 E. montana 更细长的身体 (体高在肛门 8.6-10.5% SL vs.10.6-11.4) 與從 E. sicula 藉由在下面的唇邊緣上的缺少輕微中央的凹窪(vs. 存在的)。 E. ascita 進一步不同於 E. cavatura 在胸棘的前緣上有鋸齒比較向傍邊 (vs. 前面地) 直接的, 一個較小的眼 與鼻孔 (鼻孔複合體的長度 53-75% 的眼間骨寬度 vs.77-90), 與從 E. sicula. 在有一個方面較深的尾柄 (5.4-6.2% SL vs.4.1-5.1).(參考文獻 55978)
Found in pebble and cobble riffles with moderate depth of about 20 cm (Ref. 55978).
具有大约 20 公分的中等深度发现于小圆石与圆石急流了。 (参考文献 55978)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
亚洲: 尼泊尔。
Ng, H.H. and D.R. Edds, 2005. Two new species of Erethistoides (Teleostei: Erethistidae) from Nepal. Ichthyol. Explor. Freshwat. 16(3):239-248. (Ref. 55978)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00280 - 0.02153), b=3.08 (2.84 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
