Lacustris Rainbow

  • Lacustris Rainbow (Melanotaenia lacustris), also known as the Lake Kutubu Rainbowfish, is a vibrant freshwater species renowned for its stunning iridescent blue-green coloration.
  • Lacustris Rainbowfish thrive in water temperatures between 72°F and 79°F and prefer a slightly alkaline pH, typically between 7.0 and 8.0.
  • They can grow up to 4 to 5 inches in length and are best kept in schools of at least six or more, as they are social fish that display more vibrant behavior and coloration in groups.
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SKU: 2001

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Description

Introduction: The Lacustris Rainbow (Melanotaenia lacustris), also known as the Lake Kutubu Rainbowfish, is a vibrant freshwater species native to Papua New Guinea’s Lake Kutubu. Known for its stunning iridescent blue-green coloration, this peaceful and active fish is a popular choice for community aquariums. The Lacustris Rainbow’s playful nature, combined with its striking appearance, makes it a captivating addition to any well-planted tank.

Scientific Name: The Lacustris Rainbow is scientifically known as Melanotaenia lacustris. It belongs to the family Melanotaeniidae, commonly known as rainbowfish.

Water Quality and Temperature: To replicate the Lacustris Rainbow’s natural habitat, maintain the following water parameters:

  • Temperature: Maintain a range between 72°F to 79°F (22°C to 26°C) for optimal comfort.
  • pH Level: Keep the pH level between 7.0 and 8.0, as they prefer slightly alkaline water.
  • GH Level: Aim for a general hardness (GH) level between 10 to 20 dGH for stable conditions.
  • KH Level: Maintain the carbonate hardness (KH) between 8 to 12 dKH.

Feeding: The Lacustris Rainbow is an omnivorous fish with a healthy appetite. Offer them a varied diet to ensure optimal health:

  • Flake Foods: High-quality flake foods designed for tropical fish.
  • Pellets: Sinking pellets that cater to their dietary needs.
  • Live or Frozen Foods: Include live or frozen options such as brine shrimp, daphnia, and bloodworms for added protein.
  • Vegetable Matter: Occasionally offer blanched vegetables like spinach or spirulina-based foods for added nutrients.

Tank Mates: The Lacustris Rainbow is peaceful and thrives in a community aquarium. Suitable tank mates include other rainbowfish species, tetras, danios, and peaceful cichlids like dwarf cichlids. Avoid housing them with overly aggressive or territorial fish, as they prefer tranquil environments where they can swim freely.

Substrates and Tank Decorations: Use a fine gravel or sand substrate to create a natural environment for the Lacustris Rainbow. They appreciate a well-decorated tank that includes driftwood, rocks, and live plants. Dense planting helps provide them with shelter and replicates their natural habitat. Ensure there is ample swimming space, as they are active fish that enjoy moving through open areas of the tank.

Suitable Plants: The Lacustris Rainbow thrives in a well-planted aquarium. Hardy plant species such as Java Fern, Vallisneria, Cryptocoryne, and Anubias make excellent additions, offering shade and security while mimicking their natural habitat.

Sexing: Sexing Lacustris Rainbowfish is relatively easy. Males are typically more vibrant, with deeper body coloration and extended dorsal and anal fins, while females are slightly smaller and less brightly colored. Males may also display a more prominent forehead when fully mature.

Breeding: Breeding Lacustris Rainbows in captivity is relatively straightforward. Provide a separate breeding tank with fine-leaved plants or spawning mops where the female can lay her eggs. After spawning, it’s best to remove the adults to prevent them from eating the eggs. The eggs typically hatch within a week, and the fry should be fed on infusoria or liquid fry food until they are large enough to consume crushed flake food.

Maximum Size and Longevity: The Lacustris Rainbow can grow up to 4 to 5 inches (10 to 12 cm) in length. With proper care, they can live for 5 to 8 years in a well-maintained aquarium.

General Information: The Lacustris Rainbow is admired for its stunning blue-green hues, which intensify with age and mood. Their active and peaceful nature makes them an ideal choice for community tanks, and they enjoy swimming in schools, making for a captivating display.

A Fun Fact: The Lacustris Rainbow’s colors can change depending on their mood, lighting, and environment, with males often becoming more vibrant during mating displays or territorial behavior.

Specification

My Family

Family

Melanotaeniidae

Where I am from

Origin

Papua New Guinea

My behaviour

Social

Schooling

How do I breed

Breeding

Egglayer

Can you keep me

Care Level

Moderate

Potential of Hydrogen

pH Level Aquarium pH measures water acidity/alkalinity. 7 is neutral. Fish have pH preferences; maintain ideal levels for their health and stability.

7.0 – 8.0

General Hardness

GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content.

10 – 20 dGH

Carbonate Hardness

KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish.

8 – 12 dKH

Temperature

Temperature Ideal temperature needed for fish

22°C – 26°C

How long will I live

Life Span

5 – 8 Years

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