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Iriatherina werneri - Threadfin RainbowfishMagyarul / Hungarian
Iriatherina werneri - Threadfin RainbowfishIriatherina werneri - Threadfin RainbowfishIriatherina werneri - Threadfin RainbowfishIriatherina werneri - Threadfin Rainbowfish
  • Scientific name: Iriatherina werneri
  • Common name: Threadfin Rainbowfish, Featherfin Rainbowfish
  • Group: Rainbowfish
  • Habitat: Asia; Indonesia, Papua New Guinea, Australia.
  • Size: male 5 cm, female 3,5 cm
  • Biotope: Inhabits in still or slow-flowing rivers, or swamps usually in heavily vegetated clear water.
  • Social behavior: Peaceful, lively schooling fish, but not suitable for the general community tank as the long fins of mature males are easy pickings for fin-nippers.
  • Diet: Omnivorous; fine live foods of all types, and flake foods. Make sure that the foods are small enough for their tiny mouth.
  • Breeding: Hard
  • Tank: Minimum 60 litres
  • Population: 6-7 fishes for 80 litres
  • Decoration: Use a fine sandy bottom, moderate edge and background vegetation and leave open swimming space. Weekly water changes are recommended.
  • Temperature: 24-30°C
  • pH: 5,5-7,5
  • Hardness: 5-12 NK°
  • Lifespan: 3-5 years

Description: Due to its notorious finnage, Iriatherina werneri can't be confused with any other rainbowfishes. Their basic body color is silver. The top has a blue and the bottom has an orange coloration. Mature specimens will show faint vertical stripes on their body. The first dorsal fin is fan shaped and has a red, orange or yellow coloration. The tail is blue or clear with red tips. Females have silver body color and transparent fins.

Both dorsal fins of the males have long, drawn out fin rays, especially the second. The anal and the caudal fins are also elongated. Males are also larger and more colourful. Breeding this fish requires some attention. The breeding tank should contain soft, acidic water and clumps of fine-leaved plants such as java moss. Before spawning, feed the fish with high quality small live and frozen foods. When in condition, the females will be visibly plump with eggs, while males will display both to females and rival males also constantly. Select the best-looking ,male and plumpest female and place them into the spawning tank. After intense courtship, where the male dances around the female with fins outstretched, spawning occurs in the Java moss. The fish are egg scatterers, so the parents should be removed after spawning. The young - depending on temperature - hatch after 8-12 days. They are very small and stay in the upper water strata. First food is rotifers, pulverized dry food, or pulverized dry egg yolk. After 7-10 days, when they are a little bigger, can be fed with microworm or brine shrimp nauplii. aising them is relatively easy if you can get them to this stage.

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