Rainbowfish
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- Scientific name – Melanotaenia praecox
- Relative PH of the water – 6.8 – 7.5
- Hardness of water (dKH, dGH) – 5 – 15
- Temperature in degrees (°C) – 23 – 28
- Maximum length (cm) – 8
- Reproduction – egg scatter
- Capacity of the smallest aquarium in which fish may be kept (in liters) – 55
