分類 / 名稱
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Teleostei >
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Stichonodontinae
Etymology: diamantina: The specific name diamantina is in reference to the type region, the Chapada Diamantina.
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. [...] (Ref. 128868), visit book page.
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.
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: upper and middle course of rio Paraguaçu, Brazil which have several relatively small tributaries entering its margins.
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 6.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 75036)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 11; 臀鰭軟條: 28 - 31. Diagnosed from all members of the genus Moenkhausia by the body color pattern, the presence of scales on the predorsal median line and the number of anal-fin rays. Distinguished from Moenkhausia levidorsa in having a regularly scaled predorsal line (vs. a naked predorsal line); and differs from other congeners, except for Moenkhausia oligolepis, Moenkhausia sanctaefilomenae, Moenkhausia pyrophthalma, Moenkhausia nigromarginata and Moenkhausia diktyota, by having a reticulated body pigmentation pattern. Differs further from all congeners with a reticulated body pigmentation pattern, except for Moenkhausia nigromarginata, by the absence of a conspicuous dark blotch in the caudal peduncle; further distinguished from Moenkhausia sanctaefilomenae and Moenkhausia oligolepis by its higher number of pored lateral line scales (32-34 vs. 22-24, 27-30, respectively); and differs from Moenkhausia diktyota in the extent of the poring of the lateral line (complete vs. incomplete). Can be differentiated from Moenkhausia nigromarginata by the absence of a black stripe on the anterior edge of dorsal, pelvic and anal fins, and absence of longitudinal stripes on the body positioned over the center of the scales (vs. presence of both pigmentation patterns) and the number of anal-fin rays (iv, 24-26; vs. ii-iv, 20-22) (Ref. 75036).
Body shape (shape guide): short and / or deep.
Inhabits blackwater rivers. The type locality (rio Toalhas) of this species has a sandy and rocky bottom, with little riparian and submerged vegetation (Ref. 75036).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Benine, R.C., R.M.C. Castro and A.C.A. Santos, 2007. A new Moenkhausia Eigenmann, 1903 (Ostariophysi: Characiformes) from Chapada Diamantina, rio Paraguaçu Basin, Bahia, Northeastern Brazil. Neotrop. Ichthyol. 5(3):259-262. (Ref. 75036)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 07 November 2018
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): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00581 - 0.03597), 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): 3.4 ±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 (10 of 100).
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