| Fly River rainbowfish | |
|---|---|
| Conservation status | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Atheriniformes |
| Family: | Melanotaeniidae |
| Genus: | Melanotaenia |
| Species: | M. sexlineata |
| Binomial name | |
| Melanotaenia sexlineata (Munro, 1964) |
|
The Fly River rainbowfish (Melanotaenia sexlineata) is a species of freshwater fish in the Melanotaeniidae family. It is endemic to the Upper Fly River in Papua New Guinea.