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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); pirabitira: The specific name pirabitira is from Tupi-Guarani. It means mountain fish (pira, meaning fish, and ybytyra meaning mountain) in reference to the occurrence of the species in altitudes higher than 800 m.

Environment / Climate / Range Ecology

Freshwater; benthopelagic. Subtropical, preferred ?

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

South America: upper rio das Antas drainage, laguna dos Patos system, and upper rio Pelotas basin, rio Uruguay drainage in southern Brazil.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 9.1 cm SL male/unsexed; (Ref. 94017)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 10-11; Vertebrae: 35 - 38. This species is distinguished from its congeners by the combination of the following characters: body depth 27.1-34.0% of standard length; interorbital width 22.2-28.7% of head length; head depth 72.9-97.0% of HL; 15-20 branched rays on anal fin; 37-40 lateral line scales; one or two maxillary teeth; two humeral spots; and absence of bony hooks in the anal fin of males (Ref. 94017).

Occurs in streams and rivers, inhabiting lotic shallow areas (up to 1 m deep) with clear water and bottom composed of gravel and stones, at altitudes from 800 to 1200 m above sea level. Syntopic with Astyanax brachypterygium, ustraloheros sp., Cnesterodon brevirostratus, Eurycheilichthys sp., Jenynsia eirmostigma, Pareiorhaphis hystrix, Rhamdia sp., and Trichomycterus tropeiro (Ref. 94017).

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

Main reference Upload your references | References | Coordinator | Collaborators

De Lucena, C.A.S., V.A. Bertaco and G. Berbigier, 2013. A new species of Astyanax from headwater streams of southern Brazil (Characiformes: Characidae). Zootaxa 3700(2):226-236. (Ref. 94017)

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): .

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

Entered by Torres, Armi G.

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Astyanax pirabitira Lucena, Bertaco & Berbigier, 2013