Sikuensis Rainbowfish – Melanotaenia sikuensis | Rare Shoaling Fish with Gold-Blue Coloration & Lively Behavior

The Sikuensis Rainbowfish (Melanotaenia sikuensis) is a rare, colorful species from Papua New Guinea, notable for its gold-blue sheen and contrasting fins. Males glow particularly intensely in sunlight and display a magnificent play of colors during courtship.

This species is peaceful, active, and enjoys swimming, making it ideal for planted community aquariums with plenty of open space. When kept in groups, the animals display their full color splendor and exhibit lively social behavior.

🌿 Characteristics & Care:
🐠 Fish Size: M (4–5 cm)
🌎 Origin: Papua New Guinea (Sik River)
🌡️ Temperature: 24–28 °C
💧 pH Value: 6.8–7.8
⚖️ Total Hardness: up to 18 °dGH
🐟 Social Behavior: Peaceful, schooling fish (from 6 animals)
🌾 Aquarium: From 200 l, planted, with current & open swimming space

🍽️ Feeding:
Eats live, frozen, and high-quality dry food. Color-enhancing food with spirulina, krill, or paprika extract accentuates the gold-blue sheen.

💡 Tip:
A brightly lit aquarium with dark substrate and slight current optimally brings out the shimmering body coloration.

👉 Conclusion:
The Sikuensis Rainbowfish (Melanotaenia sikuensis) is a rare, intensely colored schooling fish – ideal for enthusiasts of unusual rainbowfish.