Water parameters
Overview
The Kamaka rainbowfish is endemic to the small Lake Kamakawaiar near Triton Bay in western New Guinea. Mature males are deep-bodied, and under light their bodies carry a sheen that shifts from light blue to steel blue. It grows to 6–7 cm and can be kept in smaller aquariums than the large rainbowfish. Because its natural habitat is limited to a single small lake, it is important to maintain the fish in the hobby through captive breeding.
Tank Setup
- At least 100 liters and 80 cm of length for a school of 6–10.
- 25–27°C, around neutral, moderately hard water; stable parameters are important.
- Plants along the edges, with an open swimming area in the middle; a dark substrate brings out the blue.
- It may jump; use a lid.
- Hybridization: It hybridizes easily with other Melanotaenia species; breed the species separately to keep a pure line.
Diet
Omnivorous. It feeds on fine flakes and micro granules, frozen brine shrimp, cyclops and daphnia. Feed small amounts 2–3 times a day.
Behavior and Compatibility
A peaceful, active schooling fish; males display to each other with spread fins. It may eat baby shrimp.
Good companions: Small and medium-sized tetras, rasboras, corydoras, otocinclus, blue-eye species.
Avoid: Fin-nipping barbs, large and aggressive fish; other Melanotaenia species if you plan to breed.
A short profile for this species
The Kamaka Rainbowfish page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.
Tank mates
This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.
Usually compatible
Flame Tetra
Blackfin Corydoras
Polystictus Corydoras
Emerald Betta
Emerald Cory
Porthole Catfish
Keyhole Cichlid
Cryptocoryne Parva
Gold Spot Pleco (L001)
African Glass Catfish
Should not be kept together
Hobbyist notes
Things you won't find in books, learned by trial and error. The most helpful ones are on top.
Change history and contributors
- Page created · October 16, 2026






