Australian Rainbowfish ~ Melanotaenia splendida australis

Description & Care Guide:
The Australian Rainbowfish, specifically the Melanotaenia splendida australis, is known for its striking, iridescent colors that shift from yellow to blue, especially in males during breeding season. These fish are active, peaceful, and thrive in schools, making them perfect for a community tank. They adapt well to a variety of water conditions and are easy to care for, adding both beauty and lively movement to any aquarium setup. The M. s. australis variant is particularly prized for its colorful display and durability in home tanks.

• Difficulty Level: Easy

• Tank Size: Minimum 30 gallons

• Food Requirements: Omnivorous – will eat flakes, pellets, and frozen or live foods like brine shrimp and daphnia

• Temperament: Peaceful, social, and active; should be kept in groups of at least 6

• Water Parameters: Prefers slightly alkaline water (pH 7.0 - 8.0), with temperatures between 72-79°F (22-26°C)

Wild Habitats/Origins:
The Melanotaenia splendida australis is native to northern Australia, typically found in freshwater streams, rivers, and floodplains with slow to moderate currents. These areas often have dense vegetation, providing cover and grazing areas for the species. The rainbowfish prefers clear, warm water rich in oxygen, which is why they thrive in both their natural habitat and home aquariums with similar conditions.

Fun Fact:
The males of the Melanotaenia splendida australis species display an eye-catching rainbow of colors, with hues intensifying during the breeding season, making them one of the most visually striking fish in the aquarium hobby.