分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335).
环境:氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 大洋性. 熱帶; 23°C - 26°C (Ref. 12468)
Africa: found in the area comprised between the Oshun River in Nigeria and the Cross River in Cameroon (Ref. 2936, 81638, 86396).
非洲: 對在奈及利亞與喀麥隆中的十字河的 Oshun 河。
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 4.9 cm SL 雄鱼/尚未辨别雌雄; (Ref. 2936)
背棘 (总数) : 0; 背的软条 (总数) : 12 - 14; 臀棘: 0; 臀鳍软条: 13 - 15. Diagnosis: 40-42 (Ref. 2936, 86396) or 39-43 (Ref. 81638) lateral line scales. Snout and anal fin long; head length 3.1-3.5x SL; 11-12 scales around caudal peduncle; 1 or 2 scales between anus and anal-fin origin; pectoral with total of 10-12 branched rays; pelvic with total of 9-10 branched rays; pectoral fins not reaching to pelvic fin bases; dorsal-fin origin distinctly ahead of pelvic-fin insertions (Ref. 2936, 86396). Head and body with dark band along mid-lateral surface from snout to at least rear of caudal peduncle (Ref. 81638). Mid-lateral band on body broad, with scale-centres light, and ending posteriorly in a rounded blotch that extends partly unto caudal-fin base (Ref. 2936, 86396). 12-13 (Ref. 81638) or 12-14 (Ref. 2936, 86396) total dorsal fin rays. 15 (Ref. 81638) or 13-15 (Ref. 2936, 86936) total anal fin rays.
Body shape (shape guide): elongated; Cross section: compressed.
长的与宽的吻。 侧面的眼睛,大的眼间隔 21.2-24.9% 头长, 头部延长了 28.4-32.1% SL。 在脂鳍与尾鳍基底的较后面的部分之间的中央联机的 6-8个鳞片。 中央的纵向条纹从吻尖到末端形成一个宽的圆斑点的尾鳍基底。 在腹面上的褐色颜色的区域从肛门到后端臀鳍或从腹鳍基底。 尾鳍有前外部的叶灰褐色。 在肛门与臀鳍起源之间的 1-2 鳞片。
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
非洲: 對在奈及利亞與喀麥隆中的十字河的 Oshun 河。
Vari, R.P., 2007. Distichodontidae. p. 412-465. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81638)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
渔业: 商业性; 水族馆: 商业性
工具
特别资料
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网络资源
基于模型的估算
系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00447 (0.00185 - 0.01077), b=3.17 (2.96 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
营养阶层 (参考文献 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
渔业脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |
价格分类 (Ref. 80766) |
Unknown.
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