Common names from other countries
分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Clupeiformes (Herrings) >
Clupeidae (Herrings, shads, sardines, menhadens)
Etymology: Ramnogaster: Greek, rhamnos, -on = blackberry + Greek, gaster = stomach.
More on author: Eigenmann.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性. 亞熱帶的; 31°S - 38°S
South America: Uruguay and Argentina.
南美洲: 烏拉圭與阿根廷。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 10.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 188)
背棘 (总数) : 0; 背的软条 (总数) : 15 - 16; 臀棘: 0; 臀鳍软条: 12 - 23. Belly sharply keeled. No distinct silver stripe along the flank and the first (anterior) supra-maxilla minute or absent (cf. Platanichthys platana). Distinguished from very similar R. arcuata of coastal waters by having fewer dorsal and pectoral fin rays and fewer gill rakers total; from small Sardinella and Harengula by the evenly rounded hind margin of the gill opening.
腹面锐利地龙骨。 没有明显的银色斑纹沿着侧面与第一个 (前面的) 上颚骨细小或不存在 (比较 孔头鲱［Platanichthys platana］ ). 与沿岸水域的非常相似 R. arcuata 藉着具有区分了比较少的背部与胸鳍鳍条与较少的鳃耙总数; 从小的 沙丁鱼 与 Harengula 藉由均匀地圆的鳃裂的后缘。
Apparently confined to freshwater at mouths of rivers and their lower reaches. Presumably schooling.
显然局限于淡水在河口与他们的下游。 推测为群游。
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 烏拉圭與阿根廷。
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)
CITES (Ref. 128078)
Not Evaluated
人类利用
渔业: 自给性渔业
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特别资料
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00349 - 0.01438), b=3.11 (2.93 - 3.29), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±0.1 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
