分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes)
電鰻目 (Knifefishes) >
Apteronotidae (Ghost knifefishes)
無背魚科 (Ghost knifefishes) > Apteronotinae
Etymology: Sternarchorhynchus: Greek, sternon = sternon, + Greek, archos = anus + Greek, rhyngchos = snout (Ref. 45335); axelrodi: Named for Dr Herbert Axelrod.
Eponymy: Dr Herbert Richard Axelrod (1927–2017) was an expert on tropical fishes, an entrepreneur and a publisher of pet books. [...] (Ref. 128868), visit book page.
More on authors: de & SantanaVari.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性.
South America: Brazil, Amazon Basin, Rio Tocantins (upper and lower portions of that river system).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 60.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 84053)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
This species is distinguished from its congeners by the following set of characters: a short gape that terminates posteriorly at, or slightly short of, the vertical through the anterior nares; no scales along the mid-dorsal region of the body as far posteriorly as the origin of the electroreceptive filament; anal-fin rays 200-217 (Ref. 84053).
Inhabits clear water system with the bottom formed by small stones and rocks. Feeds on insects and other aquatic invertebrates (Ref. 84053).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
近危 (NT) (B1b(iii)); Date assessed: 18 May 2022
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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).
營養階層 (Ref.
69278): 3.4 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
![Image of Sternarchorhynchus axelrodi (Axelrod\](/images/thumbnails/gif/tn_APTEROT0.gif "Image of Sternarchorhynchus axelrodi (Axelrod\")