分類 / Names
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).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: coastal basins from Ribeira de Iguape River basin, Uruguay; Uruguay River basin.
南美洲: 來自 Ribeira de Iguape 河流域到烏拉圭的海岸的流域; 烏拉圭河流域。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 67.0, range 65 - 69 cm
Max length : 8.7 cm SL 雄魚/尚未辨別雌雄; (Ref. 116915)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 11 - 12; 臀鰭軟條: 20. It is distinguished from all other species of Characidium from southern Brazil, except C. sp. cf., C. zebra, in having 14 series of scales around the caudal peduncle (Ref. 27672).
除了 C. sp. 比較以外,它是與來自巴西南部的所有的其他種的 Characidium 區分, C. 斑馬 , 尾梗的周圍有 14個成列的鱗片。 (參考文獻 27672)
Usually found in creeks or small rivers with rocky bottom and clear, fast flowing water (Ref. 27672).
通常發現於小溪或小的河有岩石的底部與清澈的, 快速的流動水.(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: 來自 Ribeira de Iguape 河流域到烏拉圭的海岸的流域; 烏拉圭河流域。
Miyazawa, C.S. and P.M. Galetti Jr., 1994. First cytogenetical studies in Characidium species (Pisces: Characiformes, Characidiinae). Cytologia 59:73-79. (Ref. 27418)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 06 May 2020
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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 (0.00582 - 0.01719), b=3.13 (2.99 - 3.27), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.6 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
