分类 / 名称
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Teleostei >
Characiformes (Characins) >
Triportheidae (Hatchet characins) > Triportheinae
Etymology: Triportheus: Greek, tres tria = three + Greek, portheo = to sack (Ref. 45335); orinocensis: Named after its type locality, Rio Orinoco.
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. 热带
South America: Rio Orinoco basin.
南美洲: Rio 奥里诺科河流域。
首次成熟时的长度 / 大小 / 重量 / 年龄
成熟度: Lm ?, range 19 - ? cm
Max length : 13.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 54769)
Body deep, with depth at dorsal-fin origin 28.7-37.1% SL and depth at pectoral-fin insertion 32.2-39.3. Distinguished easily from its congeners by the extensive scaling over the caudal and anal fins. Differs from elongate-bodied Triportheus species that have 1 longitudinal scale row between the pectoral-fin insertion and the ventral keel by the presence of 2 longitudinal scale rows between the pectoral-fin insertion and the ventral keel. Differs further from deep-bodied congeners by the combination of the number of hill rakers on the lower limb of the first gill arch (24-28); the number of branched anal-fin rays (28-32); and the number of lateral-line scales (34-39) (Ref. 54769).
身体纵深的, 在背鳍起点 28.7-37.1% SL 与在胸鳍嵌入 32.2-39.3 的深度随着深度. 容易地从它的同类在尾鳍与臀鳍上的藉由广泛的缩放比例区别了。 有别于有在胸鳍嵌入与腹的龙骨脊之间的 1 纵向的鳞片列藉由的细长的身体 Triportheus 种有在胸鳍嵌入与腹的龙骨脊之间的 2 纵向的鳞片列。 进一步不同于身体纵深同类藉由第一个鳃弓的小山耙的数字对下面肢翼的组合;(24-28) 分枝臀鳍棘条的数字;(28-32) 而且侧线鳞片 (34-39) 的数字.(参考文献54769)
描述: D. ii,9; A. iii,28-32; P. i,10-13; V. i,6.(參考文獻 54769)
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: Rio 奥里诺科河流域。
Malabarba, M.C.S.L., 2004. Revision of the neotropical genus Triportheus Cope, 1872 (Characiformes: Characidae). Neotrop. Ichthyol. 2(4):167-204. (Ref. 54769)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
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基于模型的估算
系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00617 (0.00269 - 0.01415), b=3.09 (2.88 - 3.30), 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) |
2.8 ±0.3 se; based on size and trophs of closest relatives |
渔业脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |