Threadfin Rainbowfish (Iriatherina werneri)



Threadfin Rainbowfish (Iriatherina werneri) or Featherfin Rainbowfish Rainbowfish is a fish of a group from Papua (Indonesia and Papua New Guinea) and northern Australia that have a characteristic long fins.

In its original nature, these fish are often found in the swamp - the swamp. Threadfin Rainbowfish has a body length of 4-5 cm, but not including tail length. This fish is silvery gray, males will generally attract more colorful than the female, in addition, males also have larger fins, long and conspicuous than the female. Threadfin Rainbowfish males sometimes have a reddish or yellowish dorsal fin, as well as at the base of the tail. Threadfin Rainbowfish are tropical fish that live.


water conditions with a pH of 6-7 and a temperature of 23 - 290C. These fish are omnivores with a very small mouth, generally takes micro larva, nymph shrimp, microworms, small crustaceae and other small live food. Threadfin Rainbowfish live in groups with a total membership of 6 tails or more. Breeding techniques can be done quite easily in the aquarium with the breeding tank designed with lots of plants (such as Java moss) and the food of life. The males will surround a female and will attract the attention of females by expanding dorsal fin that look very attractive.

During the process of laying eggs, the female will release a mini egg and put it in the plant. Once the spawn is complete, remove the plants to another tank to protect it from predators. The eggs will hatch after 8-12 days. Children newly hatched fish are very sensitive to water quality, and they will eat the egg yolks until they are quite capable of eating larger prey.


 Threadfin Rainbowfish live in habitats with slow-moving water, such as swamps, ditches, lagoons and rivers. Place - that place must have good aquatic vegetation including floating plants that provide shelter for fish. Threadfin Rainbowfish found in the Papua region generally has a darker color than that found in Australia.


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