Species:  Austrolebias affinis
Description: Amato, 1986
Etymology:  
References: Costa, W.J.E.M. (1995) Pearl Killifishes: The Cynolebiatinae Systematics and Biogeography of a Neotropical Annual Fish Subfamily (Cyprinodontiformes: Rivulidae). TFH. pg 65-67

Dr Lothar Seegers, Killifishes of the World: New World Killis, Aqualog Verlag pg 89

THE Austrolebias alexandri SPECIES GROUP: A TAXONOMICAL REVISION OF AN ANNUAL FISH CLADE (CYPRINODONTIFORMES: RIVULIDAE). Wilson J. E. M. Costa; Volume 15 - 2002, Comunicações do MCT.
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Abstract: Member of the clade Austrolebias alexandri species group (Costa).
Synonyms:
  • "Tacuarembo Pearlfish"
  • Austrolebias affinis (duraznensis)
  • Austrolebias duraznensis
  • Cynolebias affinis
  • Cynolebias cyaneus
  • Cynolebias mabelis (after Mabel, wife of Eduardo Susena)
    		•
    Type Locality: Temporary pools in Arroyo Tres Cruces basin, Tacuarembó, Uruguay.
    Distribution: The range of Austrolebias affinis appears to be large, covering large parts of Uruguay into Paraguay and Brazil. The type species was collected from pools in Arroyo Tres Cruces Basin, Tacuarembó, N. Uruguay by L.H. Amato in November 1985. Rio Grande do Sul, Brazil.
    Biotope: In many habitats, the surface of the water freezes on the coldest days of winter.
    Size: Males 5 - 6 cm, females 4 - 5 cm.
    Characteristics: The body is similar in shape to Austrolebias nigripinnis. The body coloration is dark grey to bluish-black with 10 - 12 rows of brilliant turquoise spots. The abdomen is lighter in color. The dorsal, caudal and anal fins display larger turquoise spots. The females are light brown with grey spots. There are several black spots on the side of the body.
    Variations: Austrolebias affinis is variable in coloration and there is speculation that Austrolebias cyaneus may be just additional populations instead of a separate species.
    History:
  • Description (Amato, 1986)
  • Austrolebias genus (Costa, 1998)
    		•
    Gallery:  
    Populations:
  • MS 96/2
  • "Churco, R6 Km399"
  • "Dom Marcos"
  • "Durazno"
  • "Paso Lambaré" (F1 available in BAKA meeting Feb1998)
  • "Pueblo Ansina" (F1 available in BAKA meeting Feb1998)
  • "R5 Km331" LS 99/1
  • "R5 Km399" (F1 available 2004-2005 Heber Salvia)
  • "Rio Pardo"
  • "Rocha" (Rocha, Uruguay)
  • "Santa Maria"
  • "Tacuarembó" (Uruguay)
  • "Tres Cruces" (Tres Cruces Creek on Route 5)
  • "W. Camaqua"
    • Breeding: Bottom spawner. Moderately easy 2:5. Very prolific.

    It is one of the easier species to propagate and is widely available in the hobby today.

    Males can be aggressive as they defend small territories where other males are not tolerated.

    This species breeds when the temperature is above 14ºC. A pair will dive into the peat to deposit the eggs.
    Incubation: [20ºC] 12 - 13 weeks

    [21 - 24ºC] 6 - 13 weeks

    [25ºC] 10 - 12 weeks

    Seems to be very variable across different strains.
    Egg Diameter: 1.3 - 1.4 mm
    Remarks:  
    Contributors:  
    Links: FishBase o Google o Google Image Search
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