分类 / Names
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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: Eigenmann.
Issue
Several morphologically similar populations from Colombia to Uruguay may be referable to this species. This species used to be incorrected listed as Characidium fasciatum (see discussion in Buckup, 1992:1071)
Environment: milieu / climate zone / 深度上下限 / distribution range
生态学
; 淡水 底中水层性. 熱帶
South America: Amazon and Essequibo River basins; and coastal basins of Guiana Shield.
南美洲: 圭亞那的亞馬遜河與 Essequibo 河流域與海岸流域遮蔽。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 7.4 cm SL 雄鱼/尚未辨别雌雄; (Ref. 101566)
Lives in groups in the upper reaches of rivers. Common in rapidly flowing water over a sandy or rocky substrate (Ref. 27188). Feeds mainly on insects which they dig from the substrate or pick from the rocks (Ref. 12225). Highly mimetic, the intensity of the black bands depends on the color of the substrate (Ref. 27188).
在河的上游中群居。 常见于在一个沙或岩石的底部上的快速流动的水。 (参考文献 27188) 主要吃昆虫他们挖从底部或者剔啄从岩石那一个。 (参考文献 12225) 高度拟态, 黑色条纹的色彩厚度仰赖底部的颜色.(参考文献 27188)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 圭亞那的亞馬遜河與 Essequibo 河流域與海岸流域遮蔽。
Buckup, P.A., 2003. Crenuchidae (South American darters). p. 87-95. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37059)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-1)
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Estimates based on models
Phylogenetic diversity index (参考文献
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00709 - 0.01229), b=3.08 (3.02 - 3.14), in cm total length, based on LWR estimates for this species (Ref.
93245).
营养阶层 (参考文献
69278): 3.5 ±0.3 se; based on diet studies.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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