分类 / 名称
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Teleostei >
Clupeiformes (Herrings) >
Ehiravidae (River sprats)
Etymology: Sauvagella: Because of Sauvage, 1860-1880 and 1875-1891; ichtyologist that studied the Ogowe; author of "Histoire naturelle des poissons de Madagascar"; robusta: Named in reference to the deep body of the species, which is evident even in the juvenile specimens (Ref. 33664).
Eponymy: Dr Louis César Henri Ėmile Sauvage (1842–1917) was a French palaeontologist, herpetologist and ichthyologist. [...] (Ref. 128868), visit book page.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 大洋性; pH range: ? - 8.3. 熱帶
Africa: Sofia River drainage in Madagascar (Ref. 33664, 121308).
非洲: 馬達加斯加。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 4.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 33664)
背棘 (总数) : 0; 背的软条 (总数) : 11 - 15; 臀棘: 0; 臀鳍软条: 13 - 17; 脊椎骨: 38 - 40. Diagnosis: Body relatively elongate; belly rounded, without pre-pelvic scutes, but a pelvic scute present with slender lateral arms; gillrakers reduced in number, 15-19 gillrakers on lower limb of first arch; pelvic fin with 1 unbranched and 7 branched finrays, a little anterior to dorsal fin origin; last two anal finrays not separate from others (Ref. 33664). It is distinguished from Sauvagella madagascariensis by lower vertebral number, 38-40 vs. 41-43; deeper body, 20.8-27.4% of standard length vs. 15.8-21.1%; a shorter snout, 18.5-26.6% of head length vs. 26.2-33.7%; and a lower anal fin ray count, 13-17 vs. 17-19 (Ref. 33664).
Body shape (shape guide): elongated; Cross section: compressed.
身体纵深的,20.8-27.4% SL。 吻短的 18.5-26.6% HL。
Found in a river flowing over a rock and sand bed and forming numerous small rapids alternating with quieter pools (Ref. 33664). The apparently restricted distribution of this species combined with ongoing deforestation and erosional situation within the river basin will inevitably increase stress on the habitat rendering the species vulnerable to future decline (Ref. 33664).
采集自小的左边标本岸堤 Mangarahara 河 (索非亚河流域) 的支流， Ambomboa 河。 (= Amboaboa) 生活在岩石与沙床有很多的小迅速的被其次为的较安静的水池之上。 虽然 Ambomboa 与 Mangarahara 族群现在显得健康的, 明显人局限的分布组合的与进行中的采伐森林与河流域里面的淤泥侵蚀将不可避免在栖息地上增加压力对将来的减少使得此鱼种脆弱.(参考文献 33664)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
非洲: 馬達加斯加。
Stiassny, M.L.J., 2002. Revision of Sauvagella Bertin (Clupeidae; Pellonulinae; Ehiravini) with a description of a new species from the freshwaters of Madagascar and diagnosis of the Ehiravini. Copeia 2002(1):67-76. (Ref. 33664)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
濒危 (EN) (B2ab(iii)); Date assessed: 29 June 2016
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基于模型的估算
系统发育多样性指数 (参考文献
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00190 - 0.01153), b=3.03 (2.82 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
回复力 (参考文献
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
渔业脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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