Austrolebias
varzeae
Costa, Reis %26 Behr, 2004
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Family:
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Rivulidae
(Rivulines)
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Google Image (not verified) ccfishery.net
May show another species!
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Order:
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Cyprinodontiformes
(rivulines, killifishes and live bearers)
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Class:
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Actinopterygii (ray-finned fishes)
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In this site name:
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Max. size:
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3.4 cm SL (male/unsexed; Ref. 54764) |
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Environment: |
benthopelagic; freshwater
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Climate: |
subtropical |
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Importance:
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Resilience: |
High, minimum population doubling time less than 15 months(Preliminary K or Fecundity.)
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Distribution:
saved form ccfishery.net
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South America: known only from upper rio Uruguay basin in Brazil.
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Morphology:
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Vertebrae: 27 %26#150; 28. Easily distinguished from all congeners by having a unique color pattern of male, consisting of dark gray bars on flank, the three anteriormost bars distinctively darker and narrower than posterior ones. Differs from A. carvalhoi by having more anal-fin rays in male (23-26 vs. 21-22), longer anal-fin base length (38.1-40.9% SL vs. 31.4-35.1% SL) and more caudal-fin rays (28-29 vs. 25-26). Urogenital papilla of male not attached to anal fin, pelvic fins not united medially, 22-24 dorsal-fin rays in male and 16-18 in female, 18-19 anal-fin rays in female and 28-30 scales in the longitudinal series (Ref. 54764).
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Biology: |
The type specimens were collected in a temporary lagoon with shallow water (maximum depth about 1.5 m) and vegetation composed mainly of grasses, Nymphaea sp., Lutwigia sp., and a large volume of filamentous algae (Ref. 54764).
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Red List Status: |
Not in IUCN Red List (Ref. 57073)
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Dangerous:
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harmless
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Coordinator: |
Costa, Wilson J.E.M.
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