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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Poeciliidae (Poeciliids) > Poeciliinae
Etymology: Alfaro: Taken from Anastasio Alfaro zoologist of the Natural Museum of Costa Rica.
Eponymy: Don Anastasio Alfaro (1865–1951) was an archaeologist, geologist, ethnologist, zoologist and famous Costa Rican writer. [...] (Ref. 128868), visit book page.
More on author: Regan.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce pélagique; pH range: 6.0 - 8.0; dH range: 5 - 12; non migrateur. Tropical; 24°C - 26°C (Ref. 30491)
Central America: Costa Rica, Panama and Nicaragua.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 7.5 cm TL mâle / non sexé; (Ref. 50894); 8.0 cm (female)
Inhabits waters of low to moderate velocity, between 0 and 300 m elevation. Lives on creeks of more than 0.5 m deep, in ditches and near shorelines of large rivers. Generally swims in small groups at a depth of 20 cm. Insectivorous, the young eat mainly aquatic insects and the adults feed specifically on terrestrial insects (Ref. 36880). Found in a rapidly flowing rainforest stream (Ref. 26130).
Gestation lasts for about 24 days. Produces 10 to 30, rarely more, young. Reaches sexual maturity in about 5 or 6 months.
Rodriguez, C.M., 1997. Phylogenetic analysis of the tribe Poeciliini (Cyprinodontiformes: Poeciliidae). Copeia 1997(4):663-679. (Ref. 26855)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00891 (0.00447 - 0.01778), b=3.19 (3.02 - 3.36), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
Niveau trophique (Réf. 69278) |
3.4 ±0.45 se; based on food items. |
Résilience (Réf. 120179) |
Haut, temps minimum de doublement de population inférieur à 15 mois (tm=0.5). |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (25 of 100). 🛈 |