分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Heptapteridae (Three-barbeled catfishes)
七鰭鯰科 (Three-barbeled catfishes)
Etymology: Rhamdia: Brazilian vernacular name, Nhamdia/Jamdia (Ref. 45335); jequitinhonha: Named after the type locality in the Rio Jequitinhonha basin.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 底中水層性. 熱帶
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: Jequitinhonha River basin, Brazil.
南美洲: 巴西。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 16.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 36914)
背棘 (總數) : 1; 背的軟條 (總數) : 6; 臀棘: 0; 臀鰭軟條: 12; 脊椎骨: 39. Rhamdia jequitinhonha is diagnosed from its congeners by a unique set of character states: pectoral fin spine with serrations on both sides; head sensory canals multiple; few caudal fin upper lobe procurrent rays (10); adipose fin 34.7% of SL or 141% of HL; free post-Weberian vertebrae, 39; maxillary barbels 39.2% of SL or 159% of HL; caudal fin lower lobe slightly the longer; color pattern uniform with faint lateral stripe, no apparent irregular blotches, or dark saddle-like marking across nape.
Body shape (shape guide): elongated; Cross section: oval.
Rhamdia jequitinhonha 從它的同類被一獨特組特徵描述鑑定: 胸鰭棘用鋸齒在兩邊上; 頭部感覺管倍數; 很少的尾鰭上葉前流的鰭條;(10) 脂鰭 34.7% 的 SL 或 141% 的 HL; 分離在 Weberian 之後的脊椎骨,39; 上頜骨觸鬚 39.2% 的 SL 或 159% 的 HL; 尾鰭下葉些微地比較長; 彩色斑紋均勻的有模糊的側面斑紋 , 沒有明顯的不規則的斑塊 , 或像黑色鞍狀斑塊一樣的越過後頸印記。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 巴西。
Bockmann, F.A. and G.M. Guazzelli, 2003. Heptapteridae (Heptapterids). p. 406-431. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36914)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
近危 (NT) (B1b(iii)); Date assessed: 18 May 2022
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00374 - 0.01688), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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