Classification / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Austrolebias: Composed from Austro = the south + see under Lebias; guarani: Named for the Guaraní indigenous people, who live in several settlements very close to the type locality of this species, as a vindication of their culture and history..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce pelagico; distribuzione batimetrica 0 - 1 m (Ref. 129129). Tropical
South America: Argentina.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 5.5 cm SL maschio/sesso non determinato; (Ref. 129129); 3.8 cm SL (female)
Short description
Chiavi di identificazione | Morfologia | Morfometria
This species is distinguished from its congeners by having a unique colour pattern consisting of the following: mature males when alive with scattered small dark brown to grey irregular blotches on the laterodorsal surface of head and anterior portion of trunk, with many and relatively big sub-square irregular iridescent turquoise to light blue blotches on unpaired fins, evenly distributed, and those in the distal portion are elongated and merging, the trunk and tail with anterocentral part of scales iridescent turquoise with grey borders generating a reticulated pattern, the thin external border of the scales in the dorsal part of trunk, below the dorsal fin, are iridescent turquoise, and orange-yellowish background coloration on the base of unpaired fins and yellowish belly; in juveniles and young adults, anterior nostrils are ventrolaterally directed (Ref. 129129).
Found only in its type locality which is a seasonal pond, mainly covered with grass, in the Paraná Forest at ca.185 m a.s.l.. It is in an open space, in the surrounding jungle, with abundant palm trees. Maximum depth measured was ca. 80 cm, and the water was clear and no submerged aquatic vegetation was observed. The bottom is of soft sediment, with abundant organic
matter (Ref. 129129).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
ECoF, Eschmeyer's Catalog of Fishes, 2023. Catalog of Fishes. 1985 - onwards. CITATION NOT TO BE USED OUTSIDE FISHBASE. SEE REMARKS. Authorship varies in time: Eschmeyer, W.N.; Fricke, R.; Van der Laan, R. Web database. http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp (Ref. 123477)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
