Threadfin rainbowfish

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iThreadfin rainbowfish

Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Atheriniformes
Family: Melanotaeniidae
Genus: Iriatherina
Species: I. werneri
Binomial name
Iriatherina werneri
Meinken, 1974

The threadfin rainbowfish or featherfin rainbowfish, Iriatherina werneri, is a rainbowfish, the only species in the genus Iriatherina. It is characterized by long beautiful fins, and is among the most attractive of the rainbowfishes.

It is native to freshwater swamps and demersal or thickly vegetated areas of flowing waters, in tropical Australia, Indonesia, and Papua New Guinea.

It grows up to 5 cm (2 in) in length. Sexing is easy by examining fins: males have larger, gaudier finnage than females. Males also have more intense colours. When reproduction takes place eggs are scattered among fine leaved plants, and hatch after 8-12 days.

[edit] In the aquarium

In aquaria they are usually peaceful, they live preferably in groups of six or more. Because their long fins they should obviously be kept in a tank without fin-nippers. They breed best in tanks without other species.

They prefer water that is soft to moderately hard, slightly acidic (pH 6.0–7.0), and with a temperature of 23–29 °C (73–84 °F),

[edit] References