McCulloch's Rainbowfish
Melanotaenia maccullochi
- Least concern
- Card rarity: Common
- Fish

Melanotaenia maccullochi, the dwarf rainbowfish or McCulloch's rainbowfish, is a species of rainbow fish in the family Melanotaeniidae. It was described by James Douglas Ogilby in 1915 when he received two samples from Mr. A. Anderson and the fish was named after the ichthyologist Allan Riverstone McCulloch.
Classification
- Class
- Actinopterygii
- Order
- Atheriniformes
- Family
- Melanotaeniidae
- Genus
- Melanotaenia