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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.
Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
; agua dulce pelágico; pH range: ? - 8.0; dH range: ? - 8.5; no migratorio. Tropical; 23°C - 32°C (Ref. 36880)
Central America: Costa Rica.
Tamaño / Peso / Age
Madurez: Lm ? range ? - ? cm
Max length : 6.0 cm SL macho / no sexado; (Ref. 36880)
Short description
Claves de identificación | Morfología | Morfometría
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).
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
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 Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Referencia
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00374 - 0.01935), b=3.14 (2.95 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 3.2 ±0.40 se; based on food items.
Resiliencia (Referencia
120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (tm<1).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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