分类 / Names
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Teleostei >
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Acestrorhamphinae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335).
Eponymy: Astyanax was the son of Hector in Greek mythology. See Homer’s Iliad for details. The reasoning for its use for a genus of characins is not explained. Dr John Francis Bransford (1846–1911) was an assistant US naval surgeon (1872–1890) on the Nicaragua and Panama Canal surveys (1872–1888). [...] (Ref. 128868), visit book page.
More on author: Gill.
Issue
See Rosen (1972) for relationships of species.
Environment: milieu / climate zone / 深度上下限 / distribution range
生态学
; 淡水 底中水层性. 熱帶; 23°C - 36°C (Ref. 36880)
Central America: Nicaragua Lake and Managua Lake basins.
中美洲: 尼加拉瓜湖與馬拿瓜湖流域。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 15.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 38376)
Inhabits rivers and streams of little to moderate velocity, occurring between 5 to 530 m elevation. Predator in lakes and rivers. Feeds principally on other fishes such as tetras, poeciliids and cichlids, but also consumes terrestrial and aquatic insects to a lesser degree (Ref. 36880).
栖息于被在 5 到 530 公尺海拔之间出现的小到中等速度的河川与溪流。 在湖与河中的掠食者。 主要捕食其他的鱼例如南美产的热带鱼，胎鱂科鱼类与慈鲷科鱼类, 也消费陆生与水生昆虫较少.(参考文献 36880)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
中美洲: 尼加拉瓜湖與馬拿瓜湖流域。
Schmitter-Soto, J.J., 2017. A revision of Astyanax (Characiformes: Characidae) in Central and North America, with the description of nine new species. J. Nat. Hist. 51(23/24):1-94. (Ref. 118583)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-1)
临近濒危 (NT) (B1ab(iii)); Date assessed: 08 November 2019
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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=0.01096 (0.00493 - 0.02437), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.8 ±0.60 se; based on food items.
回复力 (参考文献
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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