Papuan rainbowfish
The Papuan rainbowfish (Melanotaenia papuae) is a species of rainbowfish in the Melanotaeniinae family. It is endemic to the Papuan Peninsula, around Port Moresby. References 

Melanotaenia
Fauna of the Papuan Peninsula
Freshwater fish of Papua New Guinea
Taxonomy articles created by Polbot
Fish described in 1981