Species:  Austrolebias nigripinnis
Description: Regan, 1912
Etymology: "Black Fin Pearlfish"
References: Costa, W.J.E.M. (1995) Pearl Killifishes: The Cynolebiatinae Systematics and Biogeography of a Neotropical Annual Fish Subfamily (Cyprinodontiformes: Rivulidae). TFH. pg 67-68

Dr Lothar Seegers, Killifishes of the World: New World Killis, Aqualog Verlag pg 93-94
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Abstract:  
Synonyms:
  • "Blackfin Pearlfish / Black Pearlfish"
    		•
    Type Locality: La Plata, Argentina
    Distribution: Lower Paraná and Uruguay basins, N.E. Argentina and W. Uruguay
    Biotope: Located at "Punta Lara" in 2002, by members of the KCA, where it is sympatric with Austrolebias bellotti. In many habitats, the surface of the water freezes on the coldest days of winter.
    Size: Males 4 - 6 cm, females 3 - 5 cm
    Characteristics: The body coloration is blue-grey to bluish-black with 9 - 11 rows of brilliant turquoise spots. The abdomen behind the gill covers is lighter in color. The dorsal, caudal and anal fins display larger turquoise spots and blotches. In some populations the dorsal fin contains 5 - 6 concentric arced lines of turquoise spots. The edge of the dorsal and anal fins has a darker band. Some populations have a turquoise edging inside of the dark band on the dorsal fin. The females are light brown with grey spots. There are several black spots on the side of the body.
    Variations:  
    History:
  • Description (Regan, 1912)
  • Cynolebias nigripinnis Arnold & Ahl (1936):313
  • Arnold (1949):37
  • Werner (1949):150
  • Beck (1950):169
  • Hoedeman (1956):647
  • Makino (1958):30
  • McInerny & Gerard (1966):303
  • Axelrod et al. (1967):246
  • Terceira (1974):64
  • van Ramshorst (1977):286
  • Riehl & Baensch (1982):554
  • Lazara (1984):57
  • Sterba (1990):488
  • Sakurai, Sakamoto & Mori (1993):224
  • Costa (1995):67
  • Wildekamp (1995):236
  • Austrolebias genus (Costa, 1998)
  • Seegers (2000):93
    		•
    Gallery:  
    Populations:
  • MSL 91/2
  • "Albino"
  • "Arroyo del Indio"
  • "Benavidez"
  • "Buenos Aires" (Argentina)
  • "Carmelo"
  • "Ceibas" MSL 11/02 (Entre Ríos, Argentina)
  • "Ceibas" MSL 91/3 (Entre Ríos, Argentina)
  • "Cerro Cufre"
  • "Colonia"
  • "CX Molina"
  • "El Sombrero"
  • "Escobar" (Buenos Aires, Argentina)
  • "Estacion Shell, Ceibas" MSL 91/2
  • "Franquia"
  • "Gameta"
  • "Ibicuisito" AF 02/1
  • "Ibicuy" AZK 97/14 (Entre Ríos, Argentina)
  • "Maschwitz" (Buenos Aires, Argentina)
  • "Maschwitz" MF 02/1 (Buenos Aires, Argentina)
  • "Maschwitz" PC 00/11 (Buenos Aires, Argentina)
  • "Molina"
  • "Ñancay" (R14, Arroyo Ñancay, Entre Rios, Argentina)
  • "Nueva Palmira" (F1 available 2004-2005 Heber Salvia)
  • "Paraná de las Palmas" DRF 6/2000
  • "Punta Lara" KCA 2/01 (Buenos Aires, Argentina)
  • "Punta Lara" KCA 2/02 (terra typica)
  • "R9 Km57"
  • "R9 Km62"
  • "R9 Km68" (F1 available in BAKA meeting Feb1998)
  • "Route 6" SK 93/16
  • "Ruta 12"
  • "Sagastome"
  • "San Savier"
  • "Villa Soriano" (F1 available 2004-2005 Heber Salvia Found together with <#Austrolebias nigripinnis#>)
    • Breeding: Keep the water temperature low, no more than 20 °C. Non aggressive. Bottom spawner, easy 1:5.

    This species breeds when the temperature is above 14ºC. A pair will dive into the peat to deposit the eggs.

    "Ceibas" MSL 11/02 population reported as aggressive. Difficult.

    The "Maschwitz" population is commonly held to be the most beautiful. But who as seen the "Ibicuisito" population? This is reported as even more beautiful.

    "Ñancay" population reported as medium aggressive though easy to breed.

    "Sagastome" population reported as slightly aggressive. Easy, although aggression could cause problems. Beautiful location, nearly as good as "Maschwitz".
    Incubation: [17 - 20ºC] 20 weeks

    [20ºC] 12 weeks

    [24 - 25ºC] 8 - 12 weeks
    Egg Diameter: 1.3 - 1.4 mm
    Remarks: Reported as tolerating temperatures from 4 - 24ºC. Lower temperatures can be used in winter to simulate a natural life cycle.
    Contributors: David Baker

    Martin Fourcade
    Links: FishBase o Google o Google Image Search
    Maschwitz collection 1998

    Maschwitz collection area (original)
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