Teleostei (teleosts) > Cyprinodontiformes
(Rivulines, killifishes and live bearers) > Rivulidae
(Rivulines) > Cynolebiinae
Etymology: Austrolebias: Composed from Austro = the south + see under Lebias.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; pH range: 6.5 - 7.5; dH range: 6 - 15; non-migratory. Subtropical; 18°C - 23°C (Ref. 2060)
South America: Atlantic coastal river basins of Uruguay.
Length at first maturity / Size / Weight / Age
Maturity: Lm 2.5, range 2 - 2.6 cm
Max length : 8.0 cm TL male/unsexed; (Ref. 36579)
Bottom spawner, 2-4 months incubation. Is easy to maintain in the aquarium (Ref. 27139).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Costa, W.J.E.M., 2003. Rivulidae (South American Annual Fishes). p. 526-548. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36579)
IUCN Red List Status (Ref. 126983)
Endangered (EN) (B1ab(ii,iii,iv)+2ab(ii,iii,iv)); Date assessed: 10 March 2017
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00358 - 0.01277), b=3.16 (2.98 - 3.34), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.4 se; based on size and trophs of closest relatives
Generation time: 0.5 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (tm=0.15-0.35; Tmax= 0.5; K= 4.45).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).