Western rainbow - Melanotaenia splendida australis
Scientific name: Melanotaenia splendida australis
Common name: Western rainbow
Usual size in fish tanks: 9 - 10 cm (3.54 - 3.94 inch)
Recommended pH range for the species: 6.5 - 8
Recommended water hardness (dGH): 5 - 12°N (89.29 - 214.29ppm)
0°C 32°F30°C 86°F
Recommended temperature: 22 - 28 °C (71.6 - 82.4°F)
The way how these fish reproduce: Spawning
Where the species comes from: Oceania
Temperament to its own species: peaceful
Temperament toward other fish species: peaceful
Usual place in the tank: Top levels
Food and feeding
Western rainbow will accept all foods but it is very important to include vegetable matter in their diet. Offering lettuce, plants, or algal based foods are ideal for them. Supplement the diet with blood worm or brine shrimp.
Australia; commonly found in the north west of Australia.
Unusually for rainbow fish, the males tend to have a slimmer profile; the females will have much deeper bodies.
Like all rainbow fish, these need spawning mops or moss to lay their eggs on. Once the spawning is complete, remove the mops or moss to another tank to prevent the parents eating them. After 2 weeks the fry should hatch but will be very small, only attempt to feed them on Infusoria or vinegar eels until they grow slightly. Once they have grown they can be offered crushed flake.
The expected life span for Melanotaenia splendida australis is 5 years.
Although these fish are quite hardy, they are very prone to struggling with high nitrates. Always keep a tight lid on the tank as they are very good jumpers.
Thanks to Sayer for his picture!