Classification / Names
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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 / गहराई सीमा / distribution range
पारिस्थितिकी
; स्वच्छ जल, अलवण जल पिलाजिक; pH range: 7.0 - 7.5; dH range: ? - 5; गैर प्रवासी. Tropical; 20°C - 26°C (Ref. 2059)
Central America: Río Térraba, Pacific drainage of Costa Rica to the Río Chiriquí, western Panama.
आकार / वज़न / Age
परिपक्व अवधि: Lm ? range ? - ? cm
Max length : 6.0 cm SL पुल्लिंग / अलिंग; (Ref. 36880)
Short description
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
Snout truncated. Anal fin much shorter than head length. Dorsal fin base very long. Vertical bars on body more conspicuous in adults, reduced to very short bars on the midline. Some populations have a dark band along the body, may be absent or diffuse on fish of other regions. Caudal fin bluish white on the margin, the proximal half is colorless and the intermediate area is darkened, especially in males. Distal half of dorsal fin yellow or orange; edge of first rays of anal fin orange or red, the black blotch sometimes absent. Bluish green highlights on iris, cheek and scales above pectoral fin (Ref.36880).
Body shape (shape guide): elongated; Cross section: oval.
Inhabits stagnant waters or currents of all velocities between 40-1250 m of elevation; mainly in waters of moderate flow in brooks and creeks at temperatures of 20-23°C. Feeds on terrestrial insects (Ref. 36880).
Life cycle and mating behavior
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा
Gestation period lasts for about 28 days. Female gives birth to 10-30 young. Reaches sexual maturity in 4 to 5 months.
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
आखेट मत्स्य: हां
साधन
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इंटरनेट स्रोत
Estimates based on models
Phylogenetic diversity index (संदर्भ
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).
Trophic level (संदर्भ
69278): 3.5 ±0.50 se; based on food items.
लौटाव (संदर्भ
120179): ऊंचा, न्यूनतम जनसंख्या दुगनी समय अवलागत 15 महीने। (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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