分類 / Names
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Teleostei >
Characiformes (Characins) >
Distichodontidae (Distichodus)
Etymology: Nannaethiops: Latin, nannus = small + Aethiops, with appearance of being from Aethiopia, the nord east African region (Ref. 45335).
More on author: Günther.
Issue
Type species of genus (monotypic) (Ref. 81638).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性; pH range: 6.5 - 7.5; dH range: ? - 12. 熱帶; 23°C - 26°C (Ref. 1672)
Africa: Niger and Cross River in Nigeria (Ref. 2936, 31256, 86396) and Chad basin (Ref. 367, 86396). Found in Cameroon, Gabon, Equatorial Guinea, DRCongo, Republic of Congo, Cabinda (Ref. 81638). Also reported from Ghana (Ref. 11235) and the lower part of the Congo basin (Ref. 2936, 94734). Reports from other parts of the Congo basin (Ref. 1878, 1879, 41591, 46861) need confirmation.
非洲: 在奈及利亞，喀麥隆，加彭，剛果的尼日與十字河, 剛果河流域的較下面的部位。 記錄來自迦納 (參考文獻 11235) 與查德流域了。 (參考文獻 367)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 6.2 cm TL 雄魚/尚未辨別雌雄; (Ref. 2936)
背棘 (總數) : 0; 背的軟條 (總數) : 12 - 14; 臀棘: 0; 臀鰭軟條: 9 - 11. Diagnosis: distinguished from Neolebias by its always complete lateral line; caudal peduncle 1-1.5x longer that high (Ref. 2936, 86396). 32-36 scales in a longitudinal series (Ref. 81638, 86396). Four, rarely 5, scales between dorsal fin origin and lateral line (Ref. 81638). 11-16 (Ref. 86396) or 12-14 (Ref. 81638) total dorsal fin rays. 10 (Ref. 86396) or 9-11 (Ref. 81638) total anal fin rays.
尾柄 1-1.5 x 比較長的那高者。 延伸至眼的前緣的上頜骨。 側線總是完成。 身體的上半部灰色的橄欖色, 較下面的部位白黃色的。 在頂端的從眼到尾部又深色的斑紋在尾部與黑色斑點的中央的深色的側面條紋背部的。
Distinguished from Neolebias by its always complete lateral line (Ref. 2936). Feeds on worms, crustaceans and insects (Ref. 7020).
與 Neolebias 區分了用它的總是側線完整。 吃蠕蟲，甲殼動物與昆蟲。 (參考文獻 7020)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 在奈及利亞，喀麥隆，加彭，剛果的尼日與十字河, 剛果河流域的較下面的部位。 記錄來自迦納 (參考文獻 11235) 與查德流域了。 (參考文獻 367)
Gosse, J.-P. and E.J. Coenen, 1990. Distichodontidae. p. 237-260. 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. 2936)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 11 May 2019
人類使用
水族館: 商業性
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01230 (0.00606 - 0.02499), b=2.87 (2.69 - 3.05), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 3.0 ±0.37 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
