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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Acestrorhamphinae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); pardensis: Named for its type locality, Pardo river basin, Camacan, Bahiha, Brazil.
Eponymy: Astyanax was the son of Hector in Greek mythology. See Homer’s Iliad for details. The reasoning for its use for a genus of characins is not explained. (Ref. 128868), visit book page.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten pelagic-neritic. Tropical
South America: Brazil.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 6.3 cm SL hane/ej könsbestämd; (Ref. 126164)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 9; Mjukstrålar i analfenan: 20 - 25. Astyanax pardensis of the A. fasciatus complex differs from the rest of the species in the group by the number of precaudal vertebrae 6 (vs. 17); by the zig-zag shape of first portion of longitudinal band; differs from A. jequitinhonhae by the shape of the mandible which is rounded (vs. acuminate) (Ref. 126164).
Cross section: oval.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Salgado, F.L.K., 2021. Astyanax pardensis (Ostariophysi: Characiformes: Characidae), new species from Das Contas and Pardo Rivers Basins, Bahia, Brazil. Int. J. Zoo. Animal Biol. 4(5):1-8. (Ref. 126164)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01047 (0.00461 - 0.02381), b=3.11 (2.93 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.0 ±0.4 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |