分类 / Names
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Teleostei >
Gymnotiformes (Knifefishes) >
Apteronotidae (Ghost knifefishes) > Apteronotinae
Etymology: Sternarchogiton: Greek, sternon = sternon, + Greek, archos = anus + Greek, geiton, -onos = neighbour (Ref. 45335); zuanoni: The species name, zuanoni, is in honor of
Jansen Zuanon of the Instituto Nacional de Pesquisas da Amazoˆnia, who has contributed enormously to our knowledgeof the ecology and taxonomy of fishes from the Amazon basin (Ref. 83662).
Eponymy: Dr Jansen Alfredo Sampaio Zuanon is a Brazilian ichthyolgist and ecologist. [...] (Ref. 128868), visit book page.
More on authors: de & SantanaVari.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. ; 3°S - 4°S, 52°W - 53°W
The single known sample of Sternarchogiton
zuanoni originated in the rapids and waterfalls of Cachoeira de Kaituká in the Município de Altamira along the lower Rio Xingu in the eastern portions of the Amazon basin (Ref. 83662).
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 17.8 cm TL 雄鱼/尚未辨别雌雄; (Ref. 83662)
简单描述
检索表 | 型态特徵 | 形态测量图
Sternarchogiton zuanoni is diagnosed from S. labiatus in the number of total anal-fin rays (129–153 versus 156–168, respectively), the interorbital width (28.8–39.4% of HL versus 19.5–24.6%, respectively), the body depth (13.3–17.3% of LEA versus 10.3–12.0%, respectively), the coloration of the anal fin (completely hyaline versus the presence of scattered brown speckling and a dark distal margin, respectively), the form of the lower lip (unelaborated versus the presence of a prominent tri-lobed structure, respectively), and the number of rows of conical teeth on the dentary (one versus two rows, respectively). Sternarchogiton zuanoni is distinguished from S. nattereri in the number of total anal-fin rays (129–153 versus 180–198, respectively), the interorbital width (28.8–39.4% of HL versus 19.9–27.6%, respectively), the length of the caudal appendage (22.4– 30.7% of LEA versus 14.6–20.4%, respectively), and the premaxillary dentition (teeth absent versus present in some sexually dimorphic males, respectively). Sternarchogiton zuanoni is diagnosable from S. porcinum in the number of total anal-fin rays (129–153 versus 182–216, respectively), the interorbital width (28.8–39.4% of HL versus 18.8–23.9%, respectively), the head width (46.2–57.3% of HL versus 39.1– 44.6%, respectively), the orbital diameter (9.3–14.1% of HL versus 4.5–7.7%, respectively), the coloration of the pectoral and anal fins (completely hyaline versus with black margins, respectively), and the dorsal profile of the head (distinctly convex versus straight or slightly convex, respectively). Sternarchogiton zuanoni is distinguished from S. preto in the number of total anal-fin rays (129–153 versus 189– 210, respectively), the interorbital width (28.8–39.4% of HL versus 17.8–25.9%, respectively), the orbital diameter (9.3– 14.1% of HL versus 2.9–8.3%, respectively), the coloration of the pectoral and anal fins (completely hyaline versus with black margins, respectively), and the premaxillary dentition (teeth absent versus present, respectively) (Ref. 83662).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
de Santana, C. D. and R. P. Vari, 2010. New rheophilic species of electric knifefish from the rapids and waterfalls of the Lower Rio Xingu, Brazil (Gymnotiformes: Apteronotidae). Copeia 2010(1):160-164. (Ref. 83662)
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 = 0.5312 [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 (10 of 100).
