Common names from other countries
分类 / Names
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).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性. 熱帶
Africa: upper courses of Niger River and Chari-Logone basin (Ref. 2936, 86396).
非洲: 尼日 (+Benoue) 與 Chari-Logone 的高流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 3.9 cm SL 雄鱼/尚未辨别雌雄; (Ref. 2936)
简单描述
检索表 | 型态特徵 | 形态测量图
Diagnosis: size small, body elongate; head length 4-7.6x SL; scale formula 3.5-4.5/46-50/-; 9-11.5 scales between posterior end of adipose and caudal fin base; 12-13 scales around caudal peduncle; 4 or 5 scales between anus and anal-fin origin; pectoral fins usually extending beyond pelvic-fin bases; pelvic fins not extending beyond anus; dorsal-fin origin behind level of pelvic-fin insertions; 9-10 anal fin branched rays; 11-12 dorsal fin branched rays; 12-13 pectoral fin branched rays; 8 pelvic fin branched rays; colour pattern different from other Nannocharax species; 3-4 cross-bars present on back; 3-5 spots along lateral line, connected or not by a dark, narrow, mid-lateral band (Ref. 2936, 86396).
短的身体。 圆头的吻。 小的眼, 眼间隔高的 19.6-22.5% 头长。 头长 13.1-25.2% SL。 在脂鳍与尾鳍基底的后端之间的 9-11.5个鳞片。 3-5个晶体状的斑点藉着来自鳃盖到尾鳍基底的纵向条纹沿着侧线接合。 3-4个横纹背面: 在后脑部后面的第一, 第二在背鳍起点, 第三在背鳍与脂鳍之间, 第 4 就在脂肪之后。 在尾鳍的每个叶上的深色的斑点。
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
非洲: 尼日 (+Benoue) 與 Chari-Logone 的高流域。
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)
CITES (Ref. 128078)
Not Evaluated
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00147 - 0.00981), b=3.11 (2.88 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
