Diamond Rainbowfish – Melanotaenia praecox | Peaceful schooling fish with blue-silver sheen & bright red fins

The Dwarf Rainbowfish (Melanotaenia praecox) is a particularly popular ornamental fish from New Guinea, known for its intensely blue-silver shimmering body and vibrantly red fins. In well-lit aquariums, it sparkles like a living jewel – a real eye-catcher for any tank.

This species is peaceful, lively, and enjoys swimming, making it ideal for planted community aquariums with open swimming space. Kept in groups, the Dwarf Rainbowfish displays its most beautiful colors and active social behavior.

🌿 Characteristics & Care:
🐠 Fish size: M (3–4 cm)
🌎 Origin: New Guinea
🌡️ Temperature: 24–28 °C
💧 pH value: 6.5–7.8
⚖️ Total hardness: up to 18 °dGH
🐟 Social behavior: Peaceful, schooling fish (from 6 individuals)
🌾 Aquarium: From 150 l, planted, with current & open swimming space

🍽️ Feeding:
Eats live, frozen, and high-quality dry food. Color-enhancing food with spirulina or krill intensifies the luminosity of the body and fins.

💡 Tip:
A brightly lit aquarium with a dark substrate and gentle current perfectly highlights the sparkle of the Dwarf Rainbowfish.

👉 Conclusion:
The Dwarf Rainbowfish (Melanotaenia praecox) is a peaceful, colorful schooling fish – ideal for active, planted community aquariums.