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俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
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 / 深度上下限 / distribution range
生態學
; 淡水 底中水層性. 溫帶
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
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 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 5.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 27672)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 12; 臀鰭軟條: 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).
獨特地在身體上被鑑定藉由 W 形的側面標誌, 那是在側部與被位於的系列的二個毗連鱗片的三個鱗片中由黑色素細胞的集中形成嗎緊鄰。下方 也被與來自巴西南部的其他種的 Characidium 區分尾梗 (14 在 C. pterostictum 中) 的周圍有 12個成列的鱗片, 側線完整 (不完全的在 C. rachovii 中),37-38個側面的鱗片;(36 或比較少的在 中 C. orientale 與 C. occidentale) 而且缺乏斜紋在側線下.(10-14條如此的橫帶出現在 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).
出現於包括對比較小的泥濘或岩石的溪流且水流和緩的地方或甚至沼澤的環境寬又開放潟湖系統的大沙灘的不同的棲息地。 (參考文獻 27672)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
無危 (LC) ; Date assessed: 06 May 2020
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01230 (0.00479 - 0.03160), b=3.00 (2.77 - 3.23), 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): 3.4 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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