Blue Rainbowfish

Blue Rainbowfish for Sale (Melanotaenia lacustris)
The Blue Rainbowfish is a vibrant and peaceful freshwater species, prized for its shimmering electric blue body that catches the light beautifully in any aquarium. Known for its active, schooling behaviour, this rainbowfish adds both colour and movement to community tanks.

Native to the rivers and lakes of Papua New Guinea, Blue Rainbowfish thrive in groups of six or more, where their colours intensify and their natural shoaling behaviour is fully displayed. Hardy and adaptable, they are perfect for both beginner and experienced aquarists seeking a striking centerpiece fish.

Key Features:

• Stunning electric blue body with shimmering iridescence

• Peaceful, active shoaling fish ideal for community tanks

• Hardy and long-lived, suitable for beginners

• Eye-catching addition to any freshwater aquarium

Care Information:

• Temperament: Peaceful, shoaling

• Tank Size: 120L+ recommended for a group

• Diet: High-quality flakes, pellets, and frozen/live foods

• Water Parameters: 24–28°C, pH 6.5–7.5

• Adult Size: Up to 12cm

The Blue Rainbowfish is a perfect combination of elegance, activity, and easy care — a must-have for aquarists who want a striking, dynamic display in their tank.