Lake Kutubu Rainbowfish 5cm

  • Lake Kutubu Rainbowfish (Melanotaenia lacustris): Stunning freshwater species from Papua New Guinea’s Lake Kutubu.
  • Colorful and Peaceful: A vibrant addition to community aquariums, harmoniously coexisting with various peaceful tank mates.
  • Courtship Spectacle: Watch as male Lake Kutubu Rainbowfish showcase their brightest hues during captivating courtship displays.
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SKU: 0039

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Introduction: Discover the vibrant beauty of the Lake Kutubu Rainbowfish (Melanotaenia lacustris). With its stunning colors and peaceful demeanor, this fish will bring a kaleidoscope of hues to your aquarium, captivating both novice and experienced hobbyists alike.

Scientific Name: The Lake Kutubu Rainbowfish, scientifically known as Melanotaenia lacustris, is a captivating freshwater species native to Lake Kutubu in Papua New Guinea.

Water Quality: Maintain pristine water conditions to ensure the Lake Kutubu Rainbowfish’s health and well-being.

Temperature: Keep the water temperature between 73°F to 82°F (23°C to 28°C) to replicate its natural habitat.

pH Level: Maintain a slightly acidic to neutral pH level ranging from 6.5 to 7.5 for optimal health and coloration.

GH Level: The General Hardness (GH) of the water should be within the range of 4 to 8 dGH to mimic its native environment.

KH Level: Keep the Carbonate Hardness (KH) between 4 to 8 dKH to ensure pH stability.

Feeding: The Lake Kutubu Rainbowfish is omnivorous and thrives on a diet of high-quality flakes, pellets, and occasional live or frozen foods like brine shrimp and daphnia.

Tank Mates: This peaceful species coexists well with other peaceful community fish. Suitable tank mates include:

  • Other Rainbowfish species
  • Corydoras Catfish
  • Tetras
  • Gouramis

Substrates and Tank Decorations: Provide a well-planted aquarium with driftwood and rocks to create natural hiding spots and territories.

Suitable Plants: Choose plants like Java Moss, Anubias, and Vallisneria, offering both aesthetics and shelter for the Lake Kutubu Rainbowfish.

Sexing: Males tend to be more colorful and have a more elongated dorsal fin compared to females.

Breeding: Breeding the Lake Kutubu Rainbowfish can be achieved in a separate breeding tank with dim lighting and fine-leaved plants for egg-laying. After spawning, remove the parents to protect the eggs.

Maximum Size and Longevity: The Lake Kutubu Rainbowfish typically grows up to 4 inches (10 cm) in length and can live for 4 to 6 years with proper care.

General Information: The Lake Kutubu Rainbowfish is highly sought after by aquarists for its vibrant colors, making it a captivating addition to any well-maintained aquarium.

A Fun Fact: Male Lake Kutubu Rainbowfish often display their brightest colors during courtship displays to attract potential mates, creating a mesmerizing spectacle for onlookers.


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