Bryconaethiops yseuxi

Bryconaethiops yseuxi Boulenger, 1899

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drawing shows typical species in Alestidae.

分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Characiformes (Characins) 脂鯉目 (Characins) > Alestidae (African tetras) Alestidae (African tetras)
Etymology: Bryconaethiops: Greek, bryko = to bite+ Aethiops, region in North east Africa (Ref. 45335)yseuxi: Named after Dr. E. Yseux, professor at the Université Libre de Bruxelles (Ref. 74421).
Eponymy: Dr Émile Ghislain Joseph Yseux (1835–1915) was a professor of zoology at the Université Libre de Bruxelles, Belgium. He was also a physician and a founding member of the Royal Society of Public Medicine and Medical Topography of Belgium. (Ref. 128868), visit book page.
More on author: Boulenger.

環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學

; 淡水 大洋性.

分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri

Africa: from Boma on the lower Congo River up to Pool Malebo, in Republic of Congo and Democratic Republic of the Congo basin (Ref. 74421).

大小 / 重量 / 年齡

成熟度: Lm ?  range ? - ? cm
Max length : 7.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 74421)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 0; 背的軟條 (總數) : 10; 臀棘: 0; 臀鰭軟條: 21 - 23. Bryconaethiops yseuxi can be distinguished from all other known Bryconaethiops species based on the following unique combination of characters: a high number of scale rows between anterior origin of dorsal fin and lateral line (7.5 vs. 6.5 or less); a low number of gill rakers on the first gill arch; and a long dorsal-fin and anal-fin bases, respectively 15.7-17.6% and 22.7-25.9% of standard length (Ref. 74421). Body deep and somewhat laterally compressed (Ref. 74421). Mouth terminal; upper jaw with three rows of premaxillary teeth; external row composed of two small median teeth with a small lateral cusp at their outer side; a median row with 6 or 7 teeth; and an inner row of 8 pluricuspid teeth with their cusp on a median row and without an anterior cusp or row of cusps as generally found in the other Bryconaethiops species (Ref. 74421). Lower jaw with an external series of 6 large pluricuspid teeth and an inner row of two median caniniform teeth (Ref. 74421). Lateral line scales 34-39; longitudinal line scales 36-40 (Ref. 74421). Head and body of live mature male specimens silvery with a pinkish hue on sides of the body; upper side of head green-olive; humeral spot present but not well marked; adipose-fin whitish transparent, blackish at base (Ref. 74421). After preservation, body yellowish white; darker above lateral line with scales above lateral line faintly dark brown on their basal part; fins whitish, transparent in overall appearance; humeral spot not well distinguishable, or even regularly absent (Ref. 74421).
Body shape (shape guide): fusiform / normal.

生物學特性     字彙 (例如 epibenthic)


生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚


主要參考資料 上傳您的推薦信 | 參考文獻 | 合作者 | 合作者

Ibala Zamba, A., G. De Boeck, V. Mamonekene and E. Vreven, 2007. Rehabilitation of Bryconaethiops yseuxi Boulenger, 1899 (Characiformes: Alestidae) from the Congo River basin, Africa. J. Nat. Hist. 41(17-20):1213-1226. (Ref. 74421)

IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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營養生態學
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豐度
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卵發育
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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 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.01072 (0.00489 - 0.02350), b=3.02 (2.84 - 3.20), 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)
3.1   ±0.4 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). 🛈