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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"; madagascariensis:Named for the island to which it is endemic, Madagascar (Ref. 33664). Eponymy: Dr Louis César Henri Ėmile Sauvage (1842–1917) was a French palaeontologist, herpetologist and ichthyologist. [...] (Ref. 128868), visit book page. More on author: Sauvage.
背棘 (总数) : 0; 背的软条 (总数) : 13 - 17; 臀棘: 0; 臀鳍软条: 17 - 19; 脊椎骨: 41 - 43. Diagnosis: Body elongate, a little compressed; belly rounded, without pre-pelvic scutes, but a pelvic scute present with slender lateral arms; gillrakers few, 17-20 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. 188, 33664). It is distinguished from other non-scuted clupeids of Spratelloides, Dussumieria and Etrumeus by presence of a normal pelvic scute vs. W-shaped (Ref. 188). It is distinguished from Sauvagella robusta by a higher vertebral number, 41-43 vs. 38-40; a shallower body, 15.8-21.1% of standard length vs. 20.8-27.4%; a longer snout, 26.2-33.7% of head length vs. 18.5-26.6%; and a higher anal fin ray count, 17-19 vs. 13-17 (Ref. 33664).
Body shape (shape guide): fusiform / normal; Cross section: oval. 身体稍微扁长形, 腹面圆形的, 没有前腹鳍鳞甲, 但是一个腹鳍鳞甲存在的有细长的垂直手臂。 鳃耙可能很少的。 最后两个臀鳍棘条不分开其它 (比较 Spratellomorpha bianalis) 。 在区域 ( Spratelloides , Dussumieria, Etrumeus) 中与其他的非被鳞甲的鲱鱼区分被有正常的腹鳍鳞甲 (比较 W 形的).(参考文献 188) 体高 15.8-21.1% SL。 吻 26.2-33.7% HL.(参考文献 33664) 鱗片是圓形的而且容易地脫落。 (參考文獻 56161) 二個色彩形式, 黃色與紅色或橘色的, 在 Sauvagella madagascariensis 中已經被記錄.(參考文獻 56161)
Found in freshwaters, possibly tolerating brackish water (Ref. 188); from sea level to about 450m, mostly in smaller rivers and streams and usually in forested areas (Ref. 56161). Probably planktivorous (Ref. 56161).
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))
系统发育多样性指数 (参考文献 82804): PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00380 - 0.02091), b=3.03 (2.83 - 3.23), 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). 🛈