分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Stevardiidae (Stevardiids) > Diapominae
Etymology: Knodus: Greek, knodon, -ontos = knife, sword (Ref. 45335).
More on authors: Weitzman, Menezes, Evers & Burns.
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
分布
领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
South America: Rio Xingu and Rio Tapajós basins in Brazil.
南美洲: 在巴西的 Rio Xingu 与 Rio Tapajos 流域。
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 3.9 cm SL 雄鱼/尚未辨别雌雄; (Ref. 137577)
Absence of a conspicuous dark blotch at the humeral region. Scales rows between dorsal-fin origin and anal-fin origin 8-10. Anal-fin gland is not cup-shaped, the upper and lower parts almost equally developed and sometimes separated by a slit in fully mature males (Ref. 81197).
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: 在巴西的 Rio Xingu 与 Rio Tapajos 流域。
Weitzman, S.H., N.A. Menezes, H.-G. Evers and J.R. Burns, 2005. Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae). Neotrop. Ichthyol. 3(3):329-360. (Ref. 56937)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
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特别资料
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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) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01259 (0.00551 - 0.02875), b=3.01 (2.82 - 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) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
渔业脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |