分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cyprinodontiformes (Rivulines, killifishes and live bearers)
鱂形目 (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines)
溪鱂科 (Rivulines) > Rivulinae
Etymology: ubim: The specific name is derived from its type locality, Igarapé Ubim. Ubim refers to the indigenous name of small Amazonian palms of the genus Geonoma, usually reaching 2-4 m height.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 底中水層性; pH range: 5.9 - ?. 25°C - ? (Ref. 95522)
South America: Igarapé do Ubím, Japurá-Solimões river drainage, Rio Amazonoas basin in Brazil.
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 1.8 cm SL 雄魚/尚未辨別雌雄; (Ref. 95522); 1.7 cm SL (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 5 - 6; 臀鰭軟條: 8 - 10; 脊椎骨: 29 - 30. Laimosemion ubim can be diagnosed from all other species of rivulids by its epipleural ribs branching at their-basal portion, and again at the sub-distal part of the dorsal branch formed by the sub-basal branching (vs. unbranched in all other rivulids, except for some species of Laimosemion with a single basal branching, but the branches formed are joint by an osseous flap. It also differs from all congeners by the possession of hypertrophied teeth on the anterior part of the outer row of the premaxillary and dentary in males (vs. teeth never hypertrophied) (Ref. 95522).
The type locality of this species is composed of a small terra-firme stream (not affected by large rivers flooding during the wet season) and adjacent pools that drain into the Igarapé do Ubím, a tributary of the Lago Amanã. Collected under dense forest vegetation commonly found in central Amazon upland areas with Mauritia flexuosa palm trees. The collection site is characterized by black water with high transparency, width of up to about 2 m and depth at the stream bed up to about 0.5 m. Mostly encountered in adjacent pools and next to palm-tree roots, where depth was about 0.1 m or less (Ref. 95522).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Costa, W.J.E.M. and H. Lazzarotto, 2014. Laimosemion ubim, a new miniature killifish from the Brazilian Amazon (Teleostei: Rivulidae). Ichthyol. Explor. Freshwat. 24(4):371-378. (Ref. 95522)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 07 November 2018
人類使用
漁業: 沒有興趣
工具
特別的報告
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網路資源
基於模型的估計
系統發育多樣性指數 (參考文獻 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=0.00661 (0.00312 - 0.01398), b=3.10 (2.92 - 3.28), 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) |
3.0 ±0.4 se; based on size and trophs of closest relatives |
回復力 (參考文獻 120179) |
高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.). |
釣魚的脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |