分類 / Names
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: xiphidius: The name xiphidus meaning sword in Latin was given because of the characteristic longitudinal black band which decorates the sides, the snout up to the caudal peduncle in the female and the caudal fin in the male (Ref. 27188).
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 底中水層性; pH range: 6.0 - 6.5; dH range: 6 - ?; 非遷移的. 熱帶; 22°C - 25°C (Ref. 2060)
South America: Oyapock River basin and adjacent coastal drainages.
南美洲: 法屬圭亞那。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 4.5 cm TL 雄魚/尚未辨別雌雄; (Ref. 35237); 3.0 cm TL (female); common length : 4.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 27139); 最大年齡: 3.00 年 (Ref. 35237)
Especially found in very shallow parts of small brooks where water is brown and rich in tannin and the substrate consists of decaying vegetation (Ref. 35237). Stays in the shaded areas of small, slow flowing rivers, sympatric with R. geayi, R. agilae, R. lungi, and R. cladophorus. Sexual differentiation is possible at 4 months of age (Ref. 27188). Not a seasonal killifish (Ref. 27139). Reproduction is not so prolific; is considered difficult to maintain in the aquarium. Sexual differentiation is possible at 3 months but reproduction occurs for the first time at around one year (Ref. 35237). If pursued by a predator this species may jump on land where it rests for a few seconds before re-entering the water (Ref. 35237).
尤其發現於小小溪的很淺部份在哪裡水是褐色而且豐富的在單寧酸，而且底部由腐爛的植物組成.(參考文獻 35237) 停留在陰暗區域中小的, 被與 R. geayi ， R. agilae ， R. lungi 與 R. cladophorus 重疊分佈的緩慢流動的河. 性的區別在 4個月的年齡是可能的。 (參考文獻 27188) 不是一個季節性的鱂科魚類.(參考文獻 27139) 繁殖不是如此多產; 一般認為難以維持在水族館。 性的區別在 3個月是可能的，但是繁殖第一次在大約一年出現。 (參考文獻 35237) 如果藉著掠食者被追捕這種可能在陸地上跳躍，在那裡它休息數個第二個以前重新進入水.(參考文獻 35237)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Eggs measure 1.6 mm diameter. Sexes can be distinguished at about 3 months of age. Dominant males are followed by 1-3 females.南美洲: 法屬圭亞那。
Costa, W.J.E.M., 2003. Rivulidae (South American Annual Fishes). p. 526-548. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36579)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 14 December 2020
人類使用
漁業: 沒有興趣
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00305 - 0.01429), b=3.10 (2.91 - 3.29), 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): 3.2 ±0.40 se; based on food items.
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (tm=1; tmax=3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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