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); turmalinensis: The new species is named for Turmalina, the country in which the specimens were first collected..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性; 深度上下限 0 - 1 m (Ref. 52302). 熱帶
South America: Rio Jequitinhonha basin, Minas Gerais, Brazil.
Rio Jequitinhonha 流域， Minas Gerais 巴西。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 6.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 81203)
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: 2 - 3; 臀鰭軟條: 18 - 21. Astyanax turmalinensis differs from the other species of the genus by the following combination of characters: presence of 20 to 24 anal fin rays; 34 to 36 scales in lateral lines; 1 or 2 teeth in the maxillary bone; greatest body depth at pelvic fin origin; caudal peduncle oval spot horizontally elongated, prolonging into median caudal fin rays, onward becoming a dark band laterally on the body, tapering anteriorly, to a point slightly anterior to middle of standard length; humeral black spot present, truncate anteriorly, usually circular posteriorly, extending anteroventrally, followed by a clear area and then subsequentely a vertically elongated dark area of loosely-assembled chromatophores. Snout slender, about the same mength as eye diameter; four teeth in the outer row of the premaxillary bone; posterior border of anal fin concave anteriorly.
Astyanax turmalinensis 在組合特徵之後有別於本屬的另一個種藉由: 有 20 到 24個臀鰭棘條; 在側線中的 34 到 36個鱗片; 在顎的硬骨 1 或 2 齒; 在腹鰭起點的最大體高; 尾柄橢圓形斑點水平地延長,進入中央的尾鰭鰭條，向前的在身體上側面地變成一個深色條紋之內延長, 尖端細的前面地, 對點些微地位於標準長度的中央前; 肱骨的黑色斑點存在的, 截形前面地, 通常圓形的在後部地, 延伸前腹部地, 然後 subsequentely 一個垂直地延長的鬆弛裝配色素胞的深色區域跟隨著一個清澈的區域。 吻細長的, 大約如同眼直徑一般的 mength; 在上頜骨前硬骨的外部列中的四個齒; 臀鰭的後緣前面地凹曲。
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Rio Jequitinhonha 流域， Minas Gerais 巴西。
Triques, M.L., V. Vono and E.V. Caiafa, 2003. Astyanax turmalinensis, a new species from the Rio Jequitinhonha basin, Minas Gerais, Brazil (Characiformes: Characidae: Tetragonopterinae). aqua, J. Ichthyol. Aquat. Biol. 7(4):145-150. (Ref. 52302)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; 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=0.01148 (0.00526 - 0.02507), b=3.08 (2.91 - 3.25), 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).
