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Teleostei >
Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Baryancistrus: Greek, barys = heavy + Greek, agkistron = hook (Ref. 45335); demantoides: Name from the German diemant, meaning diamond, and the Greek suffix, oides, meaning to resemble. The specific name refers to a demantoid, a type of garnet that ranges in color from yellowish green to brownish green, in reference to the color of the fish.
Environment: milieu / climate zone / 深度上下限 / distribution range
生态学
; 淡水 居于水底的. 热带
分布
国家 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
South America: upper Rio Orinoco drainage in Venezuela.
南美洲: 在委内瑞拉的上面 Rio 奥里诺科河流域。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 15.1 cm SL 雄鱼/尚未辨别雌雄; (Ref. 56038)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 2; 背的软条 (总数) : 7. Distinguished from all other ancistrins by having the dorsal and adipose fins connected by an expanded posterior section of the dorsal-fin membrane, golden-yellow spots confined to the anterior portion of the body and greater than 30 teeth per jaw ramus (Ref. 56038).
Body shape (shape guide): elongated.
与所有的其他 ancistrins 借着具有背部与被一个被扩大的背鳍薄膜的在后部部分连接的脂肪的鳍, 金黄色的斑点局限于身体的前部与大于每颌分支 30个齿了区分了.(参考文献 56038)
Occurs exclusively among granite rocks in flowing water (Ref. 56038).
生存在流动的水只在花冈岩岩石之中.(参考文献 56038)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 在委内瑞拉的上面 Rio 奥里诺科河流域。
Werneke, D.C., M.H. Sabaj, N.K. Lujan and J.W. Armbruster, 2005. Baryancistrus demantoides and Hemiancistrus subviridis, two new uniquely colored species of catfishes from Venezuela (Siluriformes: Loricariidae). Neotrop. Ichthyol. 3(4):533-542. (Ref. 56038)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-1)
临近濒危 (NT) (B1b(iii)+2b(iii)); Date assessed: 07 August 2019
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Estimates based on models
Phylogenetic diversity index (参考文献
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00719 - 0.03336), b=2.98 (2.81 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
回复力 (参考文献
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).
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