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Teleostei >
Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335).
More on author: Cope.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 溫帶
South America: Uruguay River and Laguna dos Patos basins in Brazil (Ref. 37059). Reported from Argentina (Ref. 51923).
南美洲: 烏拉圭河與 Laguna dos Patos 流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 5.6 cm SL 雄鱼/尚未辨别雌雄; (Ref. 27672)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 12; 臀鳍软条: 8. Is uniquely diagnosed by the W-shaped lateral marks on the body, which are formed by a concentration of melanophores in three scales of the lateral and two adjacent scales of the series situated immediately below. Is also distinguished from other species of Characidium from southern Brazil in having 12 series of scales around the caudal peduncle (14 in C. pterostictum), complete lateral line (incomplete in C. rachovii), 37-38 lateral scales (36 or fewer in C. orientale and C. occidentale); and lack of oblique bars below lateral line (10-14 such bars present in C. serrano).
独特地在身体上被鉴定藉由 W 形的侧面标志, 那是在侧部与被位于的系列的二个毗连鳞片的三个鳞片中由黑色素细胞的集中形成吗紧邻。下方 也被与来自巴西南部的其他种的 Characidium 区分尾梗 (14 在 C. pterostictum 中) 的周围有 12个成列的鳞片, 侧线完整 (不完全的在 C. rachovii 中),37-38个侧面的鳞片;(36 或比较少的在 中 C. orientale 与 C. occidentale) 而且缺乏斜纹在侧线下.(10-14条如此的横带出现在 C. serrano)
Occurs in diverse habitats including large sandy beaches of wide, open lagoon systems to smaller muddy or rocky streams with slow current or even swampy environments (Ref. 27672).
出现于包括对比较小的泥泞或岩石的溪流且水流和缓的地方或甚至沼泽的环境宽又开放泻湖系统的大沙滩的不同的栖息地。 (参考文献 27672)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 烏拉圭河與 Laguna dos Patos 流域。
Buckup, P.A. and R.E. Reis, 1997. Characidiin genus Characidium (Teleostei, Characiformes) in Southern Brazil, with description of three new species. Copeia 1997(3):531-548. (Ref. 27672)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
