New Guinea rainbowfish - Melanotaenia affinis
Scientific name: Melanotaenia affinis
Common name: New Guinea rainbowfish
Usual size in fish tanks: 10 - 13 cm (3.94 - 5.12 inch)
Recommended pH range for the species: 6.1 - 7.2
Recommended water hardness (dGH): 3 - 16°N (53.57 - 285.71ppm)
0°C 32°F30°C 86°F
Recommended temperature: 21 - 27 °C (69.8 - 80.6°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
Typical of most rainbow fish, they will readily accept all foods offered. Use a quality flake for the staple diet but vary this with treats of bloodworms and brine shrimp. They will also nibble at lettuce and spinach.
Oceania; New Guinea rainbowfish are native to Australia and New Guinea.
Males will display a brighter colouration and have extended dorsal and anal fins.
Add fine leaved plants or spawning mops to the tank to provide spawning sites. The eggs will be sticky so they will attach to the mops or plants and the female will lay a few over a period of days. When spawning is complete, remove the parents and the eggs should hatch within a week. When the fry are free swimming they can be fed on newly hatched brine shrimp and Infusoria.
The expected life span for Melanotaenia affinis is 5-8 years.
Melanotaenia affinis are classed as a shoaling species; they must be kept in small groups. Add them to a planted tank but provide plenty of open swimming space at the front. They can adapt to different water parameters but regular water changes must be performed.
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