分类 / Names
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Teleostei >
Siluriformes (Catfishes) >
Heptapteridae (Three-barbeled catfishes)
Etymology: Imparfinis: Latin, impar = unequal + Greek, finis, pinna = wing, fin (Ref. 45335).
More on author: Boulenger.
Issue
This species is placed in the genus Rhamdia in Eschmeyer (CofF ver. Mar. 2011: Ref. 86697) following Burgess (1989: Ref. 6868). Treated incertae sedis in Heptapteridae by Bockmann & Guazzelli (2003: Ref. 36914) and Ferraris 2007 (Ref. 58032). Silfvergrip 1996 (Ref. 50029) placed this in Nannorhamdia, that would make it an Imparfinis, based on examination of the types.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 熱帶
South America: Marañon River basin, Ecuador.
南美洲: Maranon 河流域,厄瓜多。
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 8.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 36914)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: Maranon 河流域,厄瓜多。
Silfvergrip, A.M.C., 1996. A systematic revision of the Neotropical catfish genus Rhamdia (Teleostei, Pimelodidae). Stockholm University and Swedish Museum of Natural History. 156 pp. + 8 pls. (Ref. 50029)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
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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=0.01122 (0.00397 - 0.03168), b=2.97 (2.73 - 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 ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).