Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
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); xavante: Named after Xavante ethnic group, natives inhabiting the Serra do Roncador and middle rio Araguaia, Mato Grosso, Brazil. A noun in apposition.
Environment / Climate / Range
Freshwater; benthopelagic. Tropical
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 3 - ? cm
Max length : 6.0 cm SL male/unsexed; (Ref. 82392)
South America: middle rio Araguaia in Mato Grosso, Brazil.
Occurs in crystalline water streams with flow from 0.05 to 0.70 m3/s. Prefers to occupy the water surface and the spaces among plants roots and tree branches. Usually aggregates with up to 2 dozens individuals, but schools with about 150 individuals have also been observed. An omnivorous fish which feeds on insects, plants, crustaceans, filamentous algae and fish (Ref. 82392).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Garutti, V. and P.C. Venere, 2009. Astyanax xavante, a new species of characid from middle rio Araguaia in the Cerrado region, central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 7(3):377-383. (Ref. 82392)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01862 (0.00815 - 0.04253), b=2.98 (2.79 - 3.17), 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 (Lm=2.5-2.6).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .