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Aphyocharax rathbuni - Redflank BloodfinMagyarul / Hungarian
Aphyocharax rathbuni - Redflank BloodfinAphyocharax rathbuni - Redflank BloodfinAphyocharax rathbuni - Redflank BloodfinAphyocharax rathbuni - Redflank BloodfinAphyocharax rathbuni - Redflank Bloodfin
  • Scientific name: Aphyocharax rathbuni
  • Synonyms: Aphyocharax stramineus (Eigenmann, 1907), Green Fire Tetra, Greenfire Tetra, Rathbun's Bloodfin
  • Common name: Redflank Bloodfin
  • Group: Characins
  • Habitat: South America; Brazil, Paraguay, Argentina and Uruguay; Endemic to Rio Paraguay, Rio Paraná and Rio Uruguay.
  • Size: 3.5-4.5 cm
  • Biotope: Inhabits shady parts of rivers and streams where lots of floating plants or overhanging vegetative cover found.
  • Social behavior: A quite peaceful, active schooling fish, that can be kept in a community tank, but may nip the long finned or slow-moving tankmates. Can be kept with similar sized characins or catfishes.
  • Diet: Omnivorous; they prefer live and frozen foods, but good quality dried foods are also accepted.
  • Breeding: Quite easy
  • Tank: Minimum 60 litres
  • Population: 8 fish for 80 litres
  • Decoration: They require a densely planted tank with dark substrate. Subdued lighting will bring out their beautiful colors. They prefer moderate water flow.
  • Temperature: 20-26 °C
  • pH: 6.5-7.5
  • Hardness: 2-20 NK°
  • Lifespan: 3-6 years

Description: Aphyocharax rathbuni males have a bluish-green color with a deep red area on the lower parts of the body from the caudal peduncle to the anal fin. The tips of the anal, pelvic and dorsal fins are white. Females are plumper especially when full of eggs, but they have similar colorations. This beautiful fish should be kept in a group of at least 6 species, or in a larger tank 10-12 species. A relatively hardy fish that will adapt to a wide range of water parameters. They usually swim in the upper or middle water levels, so provide them enough open swimming space. Do not keep them with too large or predatory fish, as they become shy and will hide all day among the plants.

Redflank Bloodfin can be bred in a smaller tank with slightly acidic (pH: 6,5), soft water that filtered through peat. Lighting is not necessary and an air-driven sponge filter is sufficient. Condition the adults with live bloodworm or with plenty of other live foods. They can be bred in pairs in a smaller aquarium, or in groups in a larger tank. Redflank Bloodfins will scatter their adhesive eggs among the fine-leaved plants, so place for examle a few clumps of Java moss in their aquarium that provide shelter for the eggs. The adult fish shoud be removed after spawning as they will eat the eggs. The number of the eggs can be as many as 500. The eggs will hatch in 2-3 days, and larvae become free-swimming in another 4-5 days. The fry can be fed with small live foods, such as brine shrimp nauplii. With regular, small water changes the fry grow quickly.

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