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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Poeciliidae (Poeciliids) > Poeciliinae
Etymology: Brachyrhaphis: Greek, brachys, eia = short + Greek, raphis = needle (Ref. 45335).
More on author: Meek.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
بوم شناسي
; آب شيرين سطح زی; pH range: 7.0 - 8.2; dH range: 4 - 10; غير مهاجر. Tropical; 23°C - 34°C (Ref. 36880)
Central America: Costa Rica.
اندازه / وزن / سن
بلوغ: Lm ?  range ? - ? cm
Max length : 7.0 cm TL جنس نر / بدون خواص جنسي; (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.
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).
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
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)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
تخمینها بر اساس مدلها
شاخص تنوع فیلوژنتیکی (مرجع 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). |
سطح تروفیک (مرجع 69278) |
3.4 ±0.45 se; based on food items. |
جهندگی (مرجع 120179) |
زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.). |
آسیبپذیری ماهیگیری (Ref. 59153) |
Low to moderate vulnerability (27 of 100). 🛈 |