分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Clupeiformes (Herrings)
鯡形目 (Herrings) >
Clupeidae (Herrings, shads, sardines, menhadens)
鯡科 (Herrings, shads, sardines, menhadens)
Etymology: Ramnogaster: Greek, rhamnos, -on = blackberry + Greek, gaster = stomach.
Eponymy: Reverend Leonard Jenyns (1800–1893) was a clergyman and amateur naturalist. [...] (Ref. 128868), visit book page.
More on author: Jenyns.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
海洋 pelagic-neritic; 深度上下限 0 - 50 m (Ref. 188). 亞熱帶的; 33°S - 42°S, 64°W - 52°W (Ref. 188)
Southwest Atlantic: southern Brazil (estuary of the Lagoa dos Patos) and Uruguay to at least Bahía Blanca, Argentina; some of the more southerly records (even to the Beagle Channel) must refer to Sprattus fuegensis.
西南大西洋: 巴西 (Lagoa dos Patos 的河口) 南部與烏拉圭到至少阿根廷的布蘭卡港; 一些比較向南記錄 (甚至到小獵犬峽道) 指的一定是 Sprattus fuegensis 。
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 9.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 188); common length : 7.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 188)
背棘 (總數) : 0; 背的軟條 (總數) : 18 - 19; 臀棘: 0; 臀鰭軟條: 12 - 23. Belly sharply keeled. Flanks silvery without a distinct silver stripe (cf. Platanichthys). Distinguished from R. melanostoma of freshwaters by having more dorsal and pectoral fin rays and total gill rakers; from small Sardinella and Harengula by the evenly rounded hind margin of the gill opening; and from Sprattus fuegensis by having i 6 pelvic fin rays.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
腹面銳利地龍骨。 側面銀色的沒有明顯的銀色斑紋 (比較 Platanichthys). 與淡水的 R. melanostoma 藉著具有區分了更背部的與胸鰭鰭條與總鰓耙; 從小的 沙丁魚 與 Harengula 藉由均勻地圓的鰓裂的後緣; 而且從 Sprattus fuegensis 藉著具有 i 6個腹鰭鰭條。
Forms schools in coastal waters, apparently inshore but not entering freshwater.
在沿岸水域中形成魚群, 顯然近海但是不進入淡水。
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
西南大西洋: 巴西 (Lagoa dos Patos 的河口) 南部與烏拉圭到至少阿根廷的布蘭卡港; 一些比較向南記錄 (甚至到小獵犬峽道) 指的一定是 Sprattus fuegensis 。
Whitehead, P.J.P., 1985. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 06 March 2017
人類使用
漁業: 低經濟
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基於模型的估計
系統發育多樣性指數 (參考文獻 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=0.00676 (0.00334 - 0.01367), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
營養階層 (參考文獻 69278) |
3.1 ±0.1 se; based on size and trophs of closest relatives |
回復力 (參考文獻 120179) |
高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.). |
釣魚的脆弱性 (Ref. 59153) |
Low vulnerability (20 of 100). 🛈 |
價格種類 (Ref. 80766) |
Low.
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