Dwarf Praecox Rainbowfish (Melanotaenia praecox)

The Dwarf Praecox Rainbowfish is a vibrant and energetic schooling fish admired for its iridescent blue body and striking red or orange fins. Native to New Guinea, this peaceful species brings constant movement and brilliant color to community aquariums. Its hardy nature, active swimming behavior, and stunning metallic sheen make it a favorite among both beginner and experienced aquarists.

Quick Facts

• Care Level: Easy
• Temperament: Peaceful, Active
• Diet: Omnivore
• Origin: New Guinea
• Adult Size: Up to 3 inches (7.5 cm)
• Minimum Tank Size: 20 gallons
• Temperature: 72–82°F (22–28°C)
• pH: 6.5–8.0

Dwarf Praecox Rainbowfish thrive when kept in groups of six or more, where their natural schooling behavior and vibrant coloration are most apparent. A well-planted aquarium with open swimming areas provides the ideal environment, while good water quality and regular maintenance help them display their best colors.

They readily accept high-quality flakes, pellets, and micro foods, along with frozen and live foods such as brine shrimp, daphnia, and bloodworms. A varied diet will enhance both their health and brilliant coloration.

With their dazzling appearance, peaceful temperament, and active nature, the Dwarf Praecox Rainbowfish is an excellent addition to community aquariums and a standout choice for aquarists seeking color and movement in the midwater levels of their tank.