Harlequin Rainbowfish Orange – Melanotaenia boesemani | Juvenile fish with a bright orange shimmer and active swimming behavior

The Harlequin Rainbowfish Orange (Melanotaenia boesemani) is a beautiful color variant of the popular rainbowfish from West Papua , captivating even at a young age with its vibrant orange shimmer . As they age, the coloration intensifies until males display a brilliant orange-blue hue .

This species is peaceful, lively, and loves to swim , making it perfect for planted community aquariums with ample open swimming space. When kept in groups, these fish display their full social behavior and exhibit harmonious coexistence.

🌿 Characteristics & Attitude:
🐠 Fish size: S/M (3–4 cm)
🌎 Origin: West Papua (Lake Ayamaru)
🌡️ Temperature: 24-28°C
💧 pH value: 6.5–8.0
⚖️ Total hardness: up to 18 °dGH
🐟 Social behavior: Peaceful, schooling fish (from 6 animals)
🌾 Aquarium: From 200 liters, with plants, current & free swimming space

🍽️ Feeding:
Eats live, frozen and dry food . Color-enhancing food with spirulina, krill or paprika extract supports intense coloration.

💡 Tip:
A brightly lit aquarium with a dark substrate makes the orange glow shine particularly brightly – ideal for a color-intensive presentation.

👉 Conclusion:
The Harlequin Rainbowfish Orange (Melanotaenia boesemani) is a colorful, peaceful schooling fish – perfect for lively, planted aquariums.