分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); xanthopterum: Derived from the Greek xanthos (yellow) and pteron (fin), meaning yellow fin, in reference to the bright yellow fins of this species.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 底中水层性.
South America: tributaries of the rio Paranaíba drainage, upper rio Paraná basin, and tributaries to the upper rio Tocantins basin in Brazil.
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 4.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 76854)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 10 - 12; 臀鳍软条: 8 - 9; 脊椎骨: 32 - 33. Distinguished from other species of genus Characidium by the bright yellow fin coloration, and by the absence of conspicuous dark bars along the sides of body in
individuals larger than 3.5 cm SL (vs. dark bars or marks present on the sides of the body in specimens of all sizes in the remaining species of Characidium) (Ref. 76854).
Found mostly in riffles, rocky bed with pebbles and sand deposits (Ref. 76854).
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Silveira, L.G.G., F. Langeani, W.J. da Graça, C.S. Pavanelli and P.A. Buckup, 2008. Characidium xanthopterum (Ostariophysi: Characiformes: Crenuchidae): a new species from the Central Brazilian Plateau. Neotrop. Ichthyol. 6(2):169-174. (Ref. 76854)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
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基于模型的估算
系统发育多样性指数 (参考文献
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00452 - 0.02316), b=3.07 (2.89 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.4 ±0.3 se; based on size and trophs of closest relatives
渔业脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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