分類 / 名稱
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Teleostei >
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Stichonodontinae
Eponymy: Dr William J Moenkhaus (1871–1947) was an American geneticist and ichthyologist who became Professor of Physiology at Indiana University Medical School (1904–1941), where he was Eigenmann’s colleague. [...] Margit Zarske is the senior author’s wife. She is a graduate teacher who, according to her husband, “…for many years has endured and supported my passion for ichthyology”. (Ref. 128868), visit book page.
More on authors: Zarske & Géry.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 底中水層性; 非遷移的. 熱帶
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: Upper Amazon River basin.
南美洲: 亞馬遜河上游河流域。
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 6.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 38399)
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: 3 - 4; 臀鰭軟條: 29 - 34; 脊椎骨: 34 - 35. Medium-sized species of Moenkhausia distinguished by the following characters: maxilla longer than snout; 1-2 broad, tri-cuspid maxillary teeth; anal fin with 29-34 branched, relatively long rays; small hooks present on rays of anal fin in males; scales relatively large, 34-36 in longitudinal series; 6.5-7.5 vertical scales before dorsal fin origin; first third of caudal origin covered with small, specialized scales; pre-ventral region rounded; shoulder spot rounded and prominent; no black spot on caudal peduncle; no black saddle-spot before origin of dorsal fin; no silver longitudinal band on side of body. 'Spines' refer to unbranched rays.
Body shape (shape guide): short and / or deep; Cross section: compressed.
Moenkhausia 的中等大小種藉著下列的特徵區別了: 顎骨長度超過吻; 1-2 寬又三犬齒的上顎齒; 臀鰭有 29-34個分枝, 相當長的鰭條; 小的鉤在雄性中位於臀鰭的鰭條之上; 鱗片相當大的,34-36 在縱向的系列中; 6.5-7.5 背鰭起點前的垂直的鱗片; 三分之第一的尾部起源覆蓋著了小的, 特殊化鱗片; 前腹的區域圓的; 肩斑點圓的與突出的; 沒有黑色的斑點在尾梗上; 沒有黑色的鞍狀斑-斑點在背鰭起點之前; 沒有在身體側邊上的銀色的縱向條紋。 '棘' 指的是不分枝的鰭條。
In slow-flowing or still waters over gravel or mud.1
在緩慢流動的或在礫石或泥上的靜止水域。1
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 亞馬遜河上游河流域。
Zarske, A. and J. Géry, 2001. Moenkhausia margitae sp.n. - eine neue Tetra-Art aus dem Stromgebiet des Rio Ucayali in Peru (Teleostei: Characiformes: Characidae). Zool. Abh. Mus. Tierkde. Dresden 51(1):5-14. (Ref. 38399)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
近危 (NT) ; Date assessed: 23 April 2014
人類使用
漁業: 潛在的興趣
工具
特別的報告
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基於模型的估計
系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01479 (0.00594 - 0.03681), b=3.00 (2.78 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
營養階層 (參考文獻 69278) |
3.3 ±0.5 se; based on size and trophs of closest relatives |
回復力 (參考文獻 120179) |
高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.). |
釣魚的脆弱性 (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |
價格種類 (Ref. 80766) |
Unknown.
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