Threadfin Rainbowfish Care Guide


Threadfin Rainbowfish
(Iriatherina werneri)

Common names:
Threadfin rainbowfish, Featherfin rainbowfish.
Size: 5cm
pH: 6.0 – 8.0
Tempº: 26ºC - 30ºC
Tank region: Middle top layer
Origin: Irain Jaya, Northern Australia
Gender: Males fins have long ‘thread’ extensions, the males first analfin is large and fan shaped, the males fins are a richer red to black, females are duller.
Notes: These rainbows are some of the most suitable for a small tank. They need to be kept in schools of at least 6. They prefer to live in a planted tank, and look truly stunning when kept in large numbers in a well aquascaped tank. In fact, it is one of the most magnificent sights in the freshwater aquarium world. Since these fish’s throats are narrow, they must be fed very small foods to prevent choking. They are very peaceful.

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