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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: Regan.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 外洋の; pH range: ? - 8.0; dH range: ? - 8.5; 移住性ではない. Tropical; 23°C - 32°C (Ref. 36880)
Central America: Costa Rica.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 6.0 cm SL オス/雌雄の選別がない; (Ref. 36880)
Sides with up to 12 dark bars, more prominent on males and diffused or absent in females. Caudal fin margin yellow or orange, submarginal darkened band in males. Distal half of dorsal fin yellowish or orange; the margin of the fin is black. Anal fin yellow with a black blotch. The gonopodium is shorter (mean 30.4% of SL) than B. olomina (mean 32.9 of SL) (Ref. 36880).
Body shape (shape guide): elongated; Cross section: oval.
An insectivorous fish which lives in waters of low to moderate current velocity, rarely in strong current, from 3-540 m elevation; in temperatures 23-32°C. Inhabits midwater or near the surface in brooks and creeks; sometimes in shallow waters of large rivers (Ref. 36880).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Every 28 days, female gives birth to 10-30 young.
Can be very aggressive, even to their own Young. This updates previous information from Ref. 26130.
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のレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
脆弱 (VU) (B1ab(iii,iv)); Date assessed: 08 November 2019
人間の用途
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00369 - 0.01962), b=3.15 (2.96 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (参照
69278): 3.2 ±0.40 se; based on food items.
回復力 (参照
120179): 高い, 15か月以下の倍増期間の最小個体群 (tm<1).
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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