分类 / Names
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Teleostei >
Clupeiformes (Herrings) >
Dorosomatidae (Gizzard shads and sardinellas)
Etymology: Odaxothrissa: Greek, odax, = with the teeth + Greek, thrissa, -es = shad (Ref. 45335); ansorgii: Named after Dr. W.J. Ansorge, who collected the type-specimens (Ref. 54749).
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水; 半咸淡水 大洋性. 熱帶; 16°N - 15°S
Africa: Western Africa, from Senegal to Angola (Ref. 188, 3509); including lower Senegal River and lagoons in Côte d'Ivoire (Ref. 54749, 81269), Niger Delta (Ref. 81269), Ogowe River (Ref. 81631), and rivers between Kouilou River in Congo Republic (Ref. 81631) and Cuanza River in Angola (Ref. 28136, 54749, 120641).
非洲: 塞內加爾到安哥拉。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 15.3 cm TL 雄鱼/尚未辨别雌雄; (Ref. 130826)
背棘 (总数) : 0; 背的软条 (总数) : 14 - 18; 臀棘: 0; 臀鳍软条: 17 - 21; 脊椎骨: 44 - 46. Diagnosis: Body moderate, often deep, its depth 25% of standard length or more; 13-17 pre-pelvic and 8-11 post-pelvic scutes, 1-2 scutes before pectoral fin origin, first pre-pectoral scute longer and more developed than following scutes without ascending arms; lower jaw strongly projecting, with strong canine teeth at symphysis; pre-maxilla with 2-4 strong backward-pointing canine teeth on each side behind outer row of pre-maxillary teeth; lower gillrakers 22-33, shorter than corresponding gill filaments; anal fin with 17-21 rays; silver stripe along flank (Ref. 188, 54749, 81269, 81631). It resembles Odaxothrissa mento, which has fewer gillrakers, 16-19 vs. 22-33; and Pellonula vorax, which lacks canine teeth in the upper jaw and has longer gillrakers, equal in length to gill filaments vs. shorter (Ref. 188, 54749).
前胸的鳞甲呈现 (13-17 腹鳍前的,1-2 在胸鳍的起源之前; 8-11 postpelvic). 第一个 prepectoral 鳞甲比较长的与更多的发展超过其它缺乏上手臂。 下颌强烈突出, 在愈合处有强的犬齿。 下鳃耙短, 少于对应的鳃丝。 银色的斑纹沿着侧面。
Found in rivers and streams (Ref. 188), also in lagoons (Ref. 2849, 81269).
发现于河川与溪流了。 也在泻湖中.(参考文献 2849)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
非洲: 塞內加爾到安哥拉。
Teugels, G.G., 2007. Clupeidae. p. 186-204. 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. 81631)
人类利用
渔业: 自给性渔业
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00433 - 0.01920), b=3.04 (2.87 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
![Image of Odaxothrissa ansorgii (Ansorge\](/images/thumbnails/gif/tn_Cyans_u0.gif "Image of Odaxothrissa ansorgii (Ansorge\")