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Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Characidae (Characins) > Incertae sedis
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mithology (Ref. 45335); jordanensis: Named after the drainage from where the species is described, the rio Jordão, a tributary to the rio Iguaçu basin.

Environment / Climate / Range Ecology

Freshwater; benthopelagic. Tropical, preferred ?

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: Rio Jacu and rio das Torres in the lower portions of the rio Jordão drainage, lower rio Iguaçu basin, Paraná, Brazil

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.6 cm SL male/unsexed; (Ref. 81203)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 10-11; Vertebrae: 34 - 37. Distinguished from other congeners by the combination of the following characters: anal fin with 13-17 branched rays; lateral line scales 35-38; one humeral spot; dentary teeth abruptly decreasing in size after the fifth tooth; orbital diameter 22.6-29.1% of HL; interorbital width 30.6-35.7% of HL; snout length 25.3-29.7% of HL; predorsal scales 12-15; dorsal procurrent rays 10-12; maxillary teeth 1 or 2; and a conspicuous midlateral band from humeral region to caudal peduncle (Ref. 81203).

Feeds on insects and plants (Ref. 81203).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Vera Alcaraz, H.S., C.S. Pavanelli and V.A. Bertaco, 2009. Astyanax jordanensis (Ostariophysi: Characidae) a new species from the rio Iguaçu basin, Paraná, Brazil. Neotrop. Ichthyol. 7(2):185-190. (Ref. 81203)

IUCN Red List Status (Ref. 109396)

Not Evaluated

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FisheriesWiki |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01380 (0.00629 - 0.03027), b=3.03 (2.86 - 3.20), based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 2.8 ±0.3 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): High, minimum population doubling time less than 15 months ().

Vulnerability (Ref. 59153): Low vulnerability (10 of 100) .

Entered by Torres, Armi G.

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Astyanax jordanensis Vera Alcaraz, Pavanelli & Bertaco, 2009