Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Matilebias: Named for Dr. Matias Pandolfi; combination of his nickname 'Mati' and Greek 'lebias'; paucisquama: Name from the Latin pauci, meaning few, and squama, meaning scales, in reference to the reduced number of scales around caudal peduncle.
More on authors: Ferrer, dos & SantosMalabarbaCosta.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: known only from the type locality, a temporary pool in the rio Vacacaí drainage, rio Jacuí tributary, laguna dos Patos drainage in Brazil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.4 cm SL male/unsexed; (Ref. 76851); 3.5 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 28 - 30. Distinguished from its congeners except from those of the Austrolebias alexandri species-group by the dark gray pectoral fins combined with the bright blue iridescence in males. Differs from other species of the Austrolebias alexandri species-group by fewer scales around caudal peduncle (12 vs. 16 or more) and the fewer dorsal-fin rays in males (17-21 vs. 20 or more ). Can be differentiated from all other species of the genus by the absence of contact organs on the inner surface of the pectoral fin in males and the color pattern of females - ground color light brownish, sides of body with a variable number of relatively large dark black spots distributed mostly on posterior portion of body (Ref. 76851).
Inhabits temporary pool, almost completely covered with emergent vegetation (Ref. 76851).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ferrer, J., L.R. Malabarba and W.J.E.M. Costa, 2008. Austrolebias paucisquama (Cyprinodontiformes: Rivulidae), a new species of annual killifish from Southern Brazil. Neotrop. Ichthyol. 6(2):175-180. (Ref. 76851)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
