分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Characidae (Characins; tetras)
脂鯉科 (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); brachypterygium: The name brachypterygium is from the Greek, brachys, short, and pterygium, fin, referring to the short anal fin. Noun in apposition.
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. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 高海拔
South America: Upper Uruguay and Jacuí River basins in Brazil.
南美洲: 烏拉圭上游與 Jacui 河流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 6.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 116165)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 2; 背的軟條 (總數) : 9; 臀棘: 0; 臀鰭軟條: 16 - 20; 脊椎骨: 34 - 36.
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 烏拉圭上游與 Jacui 河流域。
Bertaco, V.A. and L.R. Malabarba, 2001. Description of two new species of Astyanax (Teleostei: Characidae) from headwater streams of Southern Brazil, with comments on the "A. scabripinnis species complex". Ichthyol. Explor. Freshwat. 12(3):221-234. (Ref. 41290)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
近危 (NT) (B1b(iii)); Date assessed: 07 November 2018
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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=0.01096 (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).
營養階層 (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
