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Nothobranchius rachovii - Bluefin NothobranchMagyarul / Hungarian
Nothobranchius rachovii - Bluefin NothobranchNothobranchius rachovii - Bluefin NothobranchNothobranchius rachovii - Bluefin NothobranchNothobranchius rachovii - Bluefin NothobranchNothobranchius rachovii - Bluefin Nothobranch
  • Scientific name: Nothobranchius rachovii
  • Synonyms: Adiniops rachovi
  • Common name: Bluefin Nothobranch
  • Group: Killifish
  • Habitat: Africa; Mozambique and South Africa
  • Size: 5-6 cm
  • Biotope: Inhabits seasonal lowland floodplains, ponds, and streams which may completely dry up during the dry season for several months.
  • Social behavior: Males are aggressive toward each other. They should be kept in a species tank, although they are not usually aggressive towards different species.
  • Diet: Carnivorous; They are micropredators, and will eat small live and frozen foods, such as daphnia, artemia and chopped bloodworm.
  • Breeding: Quite easy
  • Tank: Minimum 40 litres
  • Population: 1 male and 2-3 females for 40 litres
  • Decoration: Use dark substrate, such as peat, and plant the tank densely to diffuse the light. Provide hiding places with wood and roots. Shallow tanks are preferred.
  • Temperature: 20-24 °C
  • pH: 6-7.5
  • Hardness: 3-10 NK°
  • Lifespan: 1 years

Description: Bluefin Nothobranch is a very attractive fish. The "red" variant has a bright red head with some turquoise highlights. Their body is turquoise, overlaid with iridescent red scales. The caudal fin has alternating turquoise and red stripes and markings with a black edge. The dorsal, anal and pelvic fins are blue with red markings. The mouth is upturned and the eye is fairly large and yellow in color. Aside from the typical orange and blue variant, there is a „Black” color variant, which has much darker colors, and was collected from the wild in Kruger National Park. Females tend to be brownish-gray with a greenish iridescence.

Males grow larger and have more vivid colors than females. When their natural habitats dry up during the dry season the adult fish die, leaving fertilised eggs encased within the substrate. The eggs are resistant to dessication and remain in the substrate until the rains return in the rainy season about 5-6 months later. At this point the eggs hatch and the fry grow very quickly, become sexual mature at around 3 weeks of age. Typical lifespan in the aquarium is 1 year. For aquarium breeding a small densely planted tank and a soft substrate -preferably peat moss - is recommended. After the fish lay the eggs into the substrate, the peat can be removed and placed in a plastic bag. The eggs should be stored at a temperature of 21-25°C for 5-7 months before being wetted.