分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Acestrorhynchidae (Smallscale pike characins) > Heterocharacinae
Etymology: Heterocharax: Greek, heteros = other + Greek, charax = a marine fish without identification (Ref. 45335).
More on author: Eigenmann.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 底中水层性. 熱帶
South America: Essequibo and Demarara River basins; Amazon River basin and tributaries between Tapajós and Tefé rivers; upper Amazon River basin and Orinoco River basin.
南美洲: Essequibo 與 Demarara 河流域; 在 Tapajos 與 Tefe 河之間的 Amazonas 河流域與支流; 亞馬遜河上游河流域，奧里諾科河河流域。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 4.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 36811)
背的软条 (总数) : 9; 脊椎骨: 35. Compared with H. virgulatus and H. leptogrammus, this species lacks the band of dark pigment dorsal to anal fin base (versus present); by its slightly upturned mouth with lower jaw somewhat prognathous (versus terminal mouth and more rounded snout). Distinguished further from H. virgulatus by its less pronounced longitudinal dark band running from posterior part of head to the caudal -fin base (versus a thicker and more heavily pigmented band); 4th and 5th infraorbitals represented by a single ossification (versus 2 separate elements); gill rakers on the epi-, hypo-, and cerato-branchial (anterior portion) of the first branchial arch are more developed; a small posterior dentary teeth beginning posterior to lateralmost tooth of the anterior series thus not forming a second internal teeth series; possess a more pointed posteroventral corner on the preopercle, and a relatively smaller orbital diameter and interorbital distance. Distinguished further from H. leptogrammus by having a deeper and more diamond-shaped body (versus elongate and slender); and, this species has typically higher counts for lateral -line scale and anal-fin rays (Ref. 38319).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
与 H. virgulatus 与 H. leptogrammus 相较, 这种缺乏深色背部的到臀鳍基底的条纹;(对存在的) 用它的些微朝上嘴部具有下颌略微下巴突出的.(对口部端位且更多的圆形吻) 从 H. virgulatus 用它的从对尾鳍基底的头部的较后面的部分延续的比较不明显纵向的深色条纹区别进一步;(对一比较厚的与颜色更深的条纹) 第 4 与第 5个眶下骨呈现出一个成骨了;(对 2个个别的要素) 在 epi 上的鳃耙-, 皮下注射-, 与 cerato-鳃的 (前部) 第一个鳃弓是更多发展的; 小的在后部的齿骨齿开始在前面系列的最后面牙齿后面如此不形成第二个内在的齿系列; 在前鳃盖骨上持有一个更尖的腹面后方的角落, 与相当小的眼窝直径与眼间距。 藉由有一个从 H. leptogrammus 区别了进一步更深与更更多菱形身体;(对延长与细长的) 并且, 这种为侧线鳞片与臀鳍棘条有典型比较高的计数.(参考文献 38319)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: Essequibo 與 Demarara 河流域; 在 Tapajos 與 Tefe 河之間的 Amazonas 河流域與支流; 亞馬遜河上游河流域，奧里諾科河河流域。
Toledo-Piza, M., 2000. Two new Heterocharax species (Teleostei: Ostariophysi: Characidae), with a redescription of H. macrolepis. Ichthyol. Explor. Freshwat. 11(4):289-304. (Ref. 38319)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
工具
特别资料
下载 XML
网络资源
基于模型的估算
系统发育多样性指数 (参考文献
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00372 - 0.02687), b=2.97 (2.74 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.5 ±0.6 se; based on size and trophs of closest relatives
回复力 (参考文献
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
渔业脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
🛈
