Turquoise Rainbowfish

Melanotaenia lacustris, the Turquoise or Lake Kutubu Rainbowfish, is endemic to the deep, alkaline Lake Kutubu in Papua New Guinea. Males display an extraordinary deep turquoise-blue body fading to a bright yellow lower flank — unlike most other Melanotaenia. Reaches up to 12 cm and is one of the more robust rainbowfish species. Does best in slightly alkaline water mirroring its lake habitat. A spectacular centrepiece for a larger rainbowfish community.

School of 6+. Slightly alkaline water (pH 7.5–8.5) preferred — reflective of Lake Kutubu's chemistry. Temperature 22–26 °C. Quality flake, frozen bloodworm, spirulina. 150+ L. Excellent oxygenation.