分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (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 / depth range / distribution range
生态学
; 淡水 底中水层性; pH range: 6.0 - 6.5; dH range: 6 - ?; 非迁移的. 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 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 4.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 35237); 3.0 cm TL (female); common length : 4.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 27139); 最大年龄: 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).
尤其发现于小小溪的很浅部份在哪里水是褐色而且丰富的在单宁酸，而且底部由腐烂的植物组成.(参考文献 35237) 停留在阴暗区域中小的, 被与 R. geayi ， R. agilae ， R. lungi 与 R. cladophorus 重叠分布的缓慢流动的河. 性的区别在 4个月的年龄是可能的。 (参考文献 27188) 不是一个季节性的鱂科鱼类.(参考文献 27139) 繁殖不是如此多产; 一般认为难以维持在水族馆。 性的区别在 3个月是可能的，但是繁殖第一次在大约一年出现。 (参考文献 35237) 如果藉着掠食者被追捕这种可能在陆地上跳跃，在那里它休息数个第二个以前重新进入水.(参考文献 35237)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
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)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00311 - 0.01404), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.2 ±0.40 se; based on food items.
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (tm=1; tmax=3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
