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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.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
; air tawar pelagis, permukaan; pH range: ? - 8.3. Tropical
Africa: Sofia River drainage in Madagascar (Ref. 33664, 121308).
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 4.7 cm SL jantan/; (Ref. 33664)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
Duri punggung (Keseluruhan (total)) : 0; duri punggung lunak (Keseluruhan (total)) : 11 - 15; Duri dubur: 0; Sirip dubur lunak: 13 - 17; vertebrata, bertulang belakang: 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.
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).
Siklus hidup dan perilaku kawin
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva
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)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan 82804) |
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00468 (0.00192 - 0.01138), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Tingkat Trofik (Acuan 69278) |
3.1 ±0.3 se; based on size and trophs of closest relatives |
Daya lenting (Acuan 120179) |
Tinggi, Waktu penggandaan populasi minimum kurang dari 15 bulan (Preliminary K or Fecundity.). |
Kerentanan Penangkapan Ikan (Ref. 59153) |
Low vulnerability (15 of 100). 🛈 |