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) >
Poeciliidae (Poeciliids)
花鱂科 (Poeciliids) > Poeciliinae
Etymology: Brachyrhaphis: Greek, brachys, eia = short + Greek, raphis = needle (Ref. 45335).
More on author: Meek.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 大洋性; pH range: 7.0 - 8.2; dH range: 4 - 10; 非遷移的. 熱帶; 23°C - 34°C (Ref. 36880)
Central America: Costa Rica.
中美洲: 哥斯大黎加。
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 7.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 26130)
Body and head grayish with fine black line along midside and a black blotch on the anal fin. Tail with a black oval blotch on its base (lacking in some individuals found in Río San Juan). Snout sharp and pointed. Anal fin shorter than head length. B. cascajalensis differs from this species in the absence of the black blotch on the base of the tail (mitochondrial DNA implies that the two are valid) (Ref. 36880).
Body shape (shape guide): elongated; Cross section: oval.
身體與頭部淺灰色的有細黑色的線在臀鰭上沿著側面中央與一個黑色的斑塊。 尾部有黑色的橢圓形的斑塊在它的基底。 (沒有一些個體發現於聖幻河了) 吻部尖而尖的。 臀鰭短於頭長。 B. cascajalensis 有別於這種在那在尾部 (線粒體 DNA 暗示,兩者是有效種) 的基底上缺乏黑色的斑塊.(參考文獻 36880)
Lives in current of low to moderate velocity between 5-50 m of elevation; at temperatures of 23-34°C. Found near the surface along large river banks, but not common in streams. Feeds on terrestrial insects and in small quantity on aquatic insects. Reproduces throughout the year (Ref. 36880).
生活在 5- 之間的低到中速度的水流海拔的 50 公尺; 在 23-34個 ° C. 的溫度 沿著大的河岸發現於靠近表面了, 但是不常見於溪流。 吃陸棲的昆蟲與在小的量吃水生昆蟲中。 繁殖全年度。 (參考文獻 36880)
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
中美洲: 哥斯大黎加。
Lucinda, P.H.F., 2003. Poeciliidae (Livebearers). p. 555-581. 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, Brazil. (Ref. 50894)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
人類使用
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基於模型的估計
系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00851 (0.00379 - 0.01909), b=3.15 (2.96 - 3.34), 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) |
3.4 ±0.45 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 (Preliminary K or Fecundity.). |
釣魚的脆弱性 (Ref. 59153) |
Low to moderate vulnerability (27 of 100). 🛈 |