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Citharidium ansorgii Boulenger, 1902

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

Teleostei > Characiformes (Characins) 脂鯉目 (Characins) > Citharinidae (Lutefishes) 琴脂鯉科 (Lutefishes)
Etymology: Citharidium: Latin, cithara = lire like instrument, diminutive (Ref. 45335).
More on author: Boulenger.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 居於水底的. 熱帶

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Africa: found only in the Niger basin in Nigeria (Ref. 2938, 7095, 81281). Maps in Ref. 2938, 81281, Ref. 31256 and Ref. 51193 also mention presence in Bénué basin. Species has also been reported from Chad basin in Cameroon (Ref. 51193).
非洲: 發現在奈及利亞只在尼日河流域中。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 58.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 2938); 最大體重: 9.1 kg (Ref. 7095)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背的軟條 (總數) : 17 - 19; 臀鰭軟條: 19 - 22. Diagnosis: snout longer than eye diameter; body depth 1.7-2.2x and head length 2.8-3.3x SL; caudal peduncle 0.8-0.9x long than deep; scale formula 12.5/46-51/14.5-16.5; 12.5 scales between lateral line and pelvic-fin base; characterized by ctenoid scales; scales without denticulations on posterior margin, but with parallel ridges prolonged as spines beyond posterior margin; short pectorals, half of head length; pelvic fins longer than pectorals, provided with scaly process at their bases; 17-19 dorsal fin branched rays; 19-22 anal fin branched rays (Ref. 2938, 81281).
體高 1.7-2.2 x, 頭長 2.8-3.3 x SL。 尾柄 0.8-0.9 x 長的超過高度地。 吻長度超過眼直徑。 短胸鰭, 一半的頭長。 腹面長度超過胸鰭。 鱗片強烈地有小齒狀突的。 淡黃色的身體有一些不規則的黑色點。 二條垂直的黑色-藍色的斜紋: 一個來自背鰭起點到腹鰭起源; 另外一從脂鰭到臀鰭。 胸鰭黃色又其他的鰭黑色。

生物學特性     字彙 (例如 epibenthic)

Maximum TL was recorded at 69.7 cm (Ref. 7095).

單一種, 特徵為有櫛鱗的鱗片。 最大體長TL記錄為 69.7 公分。 (參考文獻 7095)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

非洲: 發現在奈及利亞只在尼日河流域中。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Gosse, J.-P., 1990. Citharinidae. p. 261-268. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres de l'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren and O.R.S.T.O.M., Paris, 384 p. (Ref. 2938)

IUCN 瀕危狀態 (Ref. 130435)

  資料不足 (DD) ; Date assessed: 06 May 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01585 (0.00617 - 0.04070), b=2.96 (2.74 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  2.1   ±0.1 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (49 of 100).