分类 / Names
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Teleostei >
Siluriformes (Catfishes) >
Amphiliidae (Loach catfishes) > Doumeinae
Etymology: Phractura: Greek, phraktos = fence (Ref. 45335).
Eponymy: Claus Herluf Stenholt Clausen (1921–2002) was a California-born Danish ichthyologist and biologist. He collected in Liberia (1965). He wrote: Tropical Old World Cyprinodonts (1967). He collected the holotype. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 熱帶; 23°C - 27°C (Ref. 12468); 13°N - 6°N
Africa: Benue, lower Niger and Niger delta (Nigeria and Cameroon) to the (upper) Comoe (Burkina Faso); also reported from other coastal rivers such as the Ibu and Ogun (Nigeria) and Mono (Togo), as well as from the Volta basin (Ref. 57128).
非洲: Comoe 與 Black Volta 河河 (佛塔河上游) ， Ogun 河 (奈及利亞西部) 的支流, Benoue 河 (喀麥隆) 上游. 也已知來自尼日下游，像 Ibu 與單一的沿海河川。 (參考文獻 7353)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 7.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 57128)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 0; 背的软条 (总数) : 7; 臀棘: 2; 臀鳍软条: 7 - 9. Diagnosis: pectoral-fin tips not reaching to pelvic-fin bases; pelvic-fin insertions placed behind a vertical line from last dorsal-fin ray; snout long, its length over 55% of head length; posterior nostrils separated from orbits by a distance about equal to orbit width and not separated by bony crest; humeral process pointed; branchiostegal membrane with a shallow ventral invagination; width of occipital process comprised from 3.5-6 times in its length (Ref. 57128).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
非洲: Comoe 與 Black Volta 河河 (佛塔河上游) ， Ogun 河 (奈及利亞西部) 的支流, Benoue 河 (喀麥隆) 上游. 也已知來自尼日下游，像 Ibu 與單一的沿海河川。 (參考文獻 7353)
Skelton, P.H., L.M. Risch and D. Paugy, 2003. Amphiliidae. p. 117-143 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57128)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
