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Praecox Rainbow
Melanotaenia praecox
The Praecox Rainbow, otherwise known as the Dwarf Neon Rainbow, is a peaceful schooling fish. Rainbowfish are known for their characteristic large eyes, black or silver band that runs through the middle scale rows, deeply forked mouths, and two dorsal fins.
A planted aquarium with plenty of free swimming places available will provide a good environment for Melanotaenia praecox. A dark colored gravel substrate may intensify the Praecox Rainbow's colors.
The Praecox Rainbow is an egg layer that spawns over a moss substrate. At a temperature of around 23°C, the fry will hatch after six or seven days. Adults should be removed from the fry after hatching. Fry should be fed small pieces of live foods such as brine shrimp.
Although Praecox Rainbows have large mouths, their throats tend to be narrow. With this in mind, foods should not be too large. The Praecox Rainbow should be fed an omnivorous diet of prepared flakes, frozen, and live foods.
Approximate Purchase Size: Medium 2cm - 4cm
Due to variations within each species, your aquatic life may not look identical to the image provided.

Fish Statistics
- Minimum Tank Size:
- 100 litres
- Diet:
- Omnivore
- Origin:
- Asia, Australia
- Temp (C):
- 22-27 C
- Max Size:
- 6 cm
- Family:
- Melanotaeniidae
- Temperament:
- Peaceful
- pH:
- 6.5 - 7.5
- Care Level:
- Easy
- Compatibility:
- See Tank Mates Chart below
Buy Praecox Rainbow
Medium 2 - 4cm
- 1 to 3 - £2.55
- 4 or more items - £2.35
Tank Mates
We recommend pairing your Praecox Rainbow with these other fish: