| Slender rainbowfish | |
|---|---|
| Conservation status | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Atheriniformes |
| Family: | Melanotaeniidae |
| Genus: | Melanotaenia |
| Species: | M. gracilis |
| Binomial name | |
| Melanotaenia gracilis Allen, 1978 |
|
The slender rainbowfish (Melanotaenia gracilis) is a species of fish in the Melanotaeniidae family. It is endemic to Australia.