Collection: Rainbow Fish

Turquoise Rainbowfish (Melanotaenia lacustris)

The Turquoise Rainbowfish (Melanotaenia lacustris) is a stunning freshwater species known for its iridescent blue-green body that shimmers beautifully under aquarium lighting. Native to the clear, freshwater lakes of Papua New Guinea, this peaceful fish is ideal for community tanks. Its striking coloration, active swimming, and hardy nature make it a favorite among both novice and experienced aquarists.

Product Details

• Species: Melanotaenia lacustris
• Common Names: Turquoise Rainbowfish, Lake Kutubu Rainbowfish
• Origin: Papua New Guinea (Lake Kutubu)
• Diet: Omnivore
• Maximum Size: 10–12 cm (4–5 inches)
• Temperament: Peaceful
• Care Level: Easy

Care Guidelines

Aquarium Setup:
The Turquoise Rainbowfish thrives in aquariums of at least 120 liters, with plenty of open swimming space and areas of dense vegetation. Use a fine gravel or sandy substrate and include rocks, driftwood, and live plants to mimic its natural habitat. These fish prefer schools, so keep them in groups of six or more to promote natural behavior and reduce stress.

Water Parameters:

• Temperature: 24°C – 28°C
• pH Range: 6.5 – 8.0
• Water Hardness: Soft to moderately hard (5–15 dGH)

Diet:
Turquoise Rainbowfish are omnivorous and thrive on a varied diet. Provide high-quality flakes or pellets as a staple, supplemented with live or frozen foods like brine shrimp, daphnia, and bloodworms. They also enjoy vegetable matter, such as spirulina or blanched spinach, to maintain their vibrant coloration.

Behavior and Compatibility:
This peaceful species is an excellent addition to community tanks and pairs well with other non-aggressive fish such as tetras, rasboras, Corydoras, and other rainbowfish species. Avoid housing them with overly aggressive or large predatory fish.

Growth and Maintenance:

Turquoise Rainbowfish grow up to 12 cm and are relatively low-maintenance. Regular water changes, proper filtration, and a balanced diet are essential for their health and longevity. Their active swimming and vibrant coloration add energy and beauty to any aquarium.

Availability:
The Turquoise Rainbowfish (Melanotaenia lacustris) is available at Cradle Coast Pet & Aquarium. Visit or contact the store to check availability and bring home this shimmering and peaceful fish for your freshwater aquarium today!

Due to variations within species and age of fish, your item may not look identical to the image provided.