分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes) >
Apteronotidae (Ghost knifefishes) > Apteronotinae
Etymology: Sternarchorhynchus: Greek, sternon = sternon, + Greek, archos = anus + Greek, rhyngchos = snout (Ref. 45335); britskii: Named after Heraldo A. Britski, who first noted the presence of this species in the upper Parana system (Ref. 36352).
Eponymy: Dr Heraldo Antonio Britski is a Brazilian ichthyologist who was awarded a bachelor’s degree (1960) and a doctorate (1973) by Universidade de São Paulo where he is still a researcher, even though he is officially retired. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 熱帶
South America: Parana River basin.
南美洲: 巴拉納河流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 26.1 cm TL 雄鱼/尚未辨别雌雄; (Ref. 36886)
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) : 0; 臀棘: 0; 臀鳍软条: 166 - 178; 脊椎骨: 80 - 90. Distinguished by its congeners by the following combination of features: length from the tip of the snout to the posterior end of the anal-fin base 92.4-94.4 %TL; mouth length 5.9-7.3 %HL; distance between anterior and posterior nares 2.6-3.1 %HL; eye diameter 3.1-4.1 %HL; postocular distance 40.0-44.4 %HL; pectoral fin length 35.5-41.3 %HL; scales always present above lateral line along anterodorsal region of body; unbranched anterior anal-fin rays 18-22; a white to yellowish white (sometimes indistinct) band on frontal portion of head and middorsum; and pectoral and anal fins hyaline to translucent, without dark distal margins; small ellipsoid caudal fin with 13-15 rays (Ref. 36352).
在特徵的组合之后区别的特徵为它的同类藉由了: 长度从吻尖到臀鳍基底后端 92.4-94.4% TL; 嘴长度 5.9-7.3% HL; 前面与后面的鼻孔 2.6-3.1% HL 之间的距离; 眼直径 3.1-4.1% HL; 眶后的距离 40.0-44.4% HL; 胸鳍长度 35.5-41.3% HL; 鳞片总是沿着身体的前背部区域位于侧线之上; 不分枝的前面臀鳍棘条 18-22; 在头部与背面中央的前部分上的一条白色到黄白色 (有时不明显的) 条纹; 而且胸鳍与臀鳍透明的到半透明的, 没有深色的末梢部的边缘; 小的椭圆体尾鳍有 13-15个鳍条。 (参考文献 36352)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 巴拉納河流域。
de Santana, C. D. and R.P. Vari, 2010. Electric fishes of the genus Sternarchorhynchus (Teleostei, Ostariophysi, Gymnotiformes); phylogenetic and revisionary studies. Zool. J. Linn. Soc. 159:223-371. (Ref. 84053)
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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00145 - 0.00867), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (16 of 100).
![Image of Sternarchorhynchus britskii (Britski\](/images/thumbnails/gif/tn_APTEROT0.gif "Image of Sternarchorhynchus britskii (Britski\")