分類 / Names
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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. C Basil Jordan of the Texas Aquaria Fish Company, Dallas, was an aquarium fish dealer who received 75 of the 100 specimens of the Mexican Blind Cave Tetras collected by the San Luis Potosi expedition (1936). [...] (Ref. 128868), visit book page.
More on authors: Hubbs & Innes.
Environment: milieu / climate zone / 深さの範囲 / distribution range
生態学
; 新鮮な水 底生の漂泳性; pH range: 6.0 - 7.8; dH range: ? - 30; 移住性ではない. Tropical; 20°C - 25°C (Ref. 1672); 25°N - 21°N
North America: Mexico.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 10.0 cm TL オス/雌雄の選別がない; (Ref. )
A blind cave fish that recently evolved from the surface form Astyanax mexicanus. A length estimate for this species is 10 cm (Glenn Owens, pers.comm. 2009).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Expels eggs in a more or less haphazard fashion, the substrate on which the species spawns must have crevices and pores into which the adhesive eggs can roll and be hidden so to prevent predation by its parents or other cave inhabitants.
Proudlove, G.S., 1997. A synopsis of the hypogean fishes of the world. p. 351-354. In Proceedings of the 12th International Congress of Speleology, La Chaux de Fonds, Switzerland. vol. 3. (Ref. 27297)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-1)
絶滅危惧 (EN) (B1ab(i,iii)); Date assessed: 26 February 2018
Human uses
水産業: 興味がない; 水族館・水槽: 商業
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (参照
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).
栄養段階 (参照
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
回復力 (参照
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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