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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:
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.
In stock
| Family |
Characidae |
|---|---|
| Origin |
South America |
| Social |
Peaceful |
| Breeding |
Egglayer |
| Care Level |
Easy |
| pH Level Aquarium pH measures water acidity/alkalinity. 7 is neutral. Fish have pH preferences; maintain ideal levels for their health and stability. |
5.0 – 7.0 |
| GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content. |
1 – 5 dGH |
| KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish. |
1 – 2 dKH |
| Temperature Ideal temperature needed for fish |
23°C – 28°C |
| Life Span |
3 – 5 Years |
Available on backorder
| Family |
Poeciliidae |
|---|---|
| Origin |
North America |
| Social |
Peaceful |
| Breeding |
Livebearers |
| Care Level |
Easy |
| 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 – 8.5 |
| GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content. |
10 – 25 dGH |
| KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish. |
10 – 20 dKH |
| Temperature Ideal temperature needed for fish |
24°C – 28°C |
| Life Span |
3 – 5 Years |
In stock
| Family |
Poeciliidae |
|---|---|
| Origin |
Central America |
| Social |
Sociable |
| Breeding |
Livebearers |
| Care Level |
Easy |
| 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 |
| GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content. |
8 – 12 dGH |
| KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish. |
4 – 8 dKH |
| Temperature Ideal temperature needed for fish |
22°C – 26°C |
| Life Span |
3 – 4 Years |
| Diet |
Omnivores |
| Size | , |
In stock
| Family |
Characidae |
|---|---|
| Origin |
South America |
| Breeding |
Egglayer |
| Social |
Schooling |
| GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content. |
2 – 10 dGH |
| pH Level Aquarium pH measures water acidity/alkalinity. 7 is neutral. Fish have pH preferences; maintain ideal levels for their health and stability. |
6.0 – 7.0 |
| KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish. |
4 – 8 dKH |
| Temperature Ideal temperature needed for fish |
22°C – 28°C |
| Life Span |
3 – 5 Years |
| Diet |
Omnivores |
In stock
| Family |
Cyprinidae |
|---|---|
| Origin |
South Asia |
| Social |
Aggressive |
| Breeding |
Egglayer |
| Care Level |
Moderate |
| pH Level Aquarium pH measures water acidity/alkalinity. 7 is neutral. Fish have pH preferences; maintain ideal levels for their health and stability. |
6.0 – 7.5 |
| GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content. |
5 – 15 dGH |
| KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish. |
2 – 10 dKH |
| Temperature Ideal temperature needed for fish |
23°C – 27°C |
| Life Span |
5 – 7 Years |
| Diet |
Omnivores |
| Size | , |
In stock
| Family |
Cyprinidae |
|---|---|
| Origin |
Asia |
| Social |
Schooling |
| Breeding |
Livebearers |
| Care Level |
Easy |
| pH Level Aquarium pH measures water acidity/alkalinity. 7 is neutral. Fish have pH preferences; maintain ideal levels for their health and stability. |
6.0 – 8.0 |
| GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content. |
8 – 12 dGH |
| KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish. |
2 – 10 dKH |
| Temperature Ideal temperature needed for fish |
18°C – 22°C |
| Life Span |
10 – 15 Years |
| Diet |
Omnivores |
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Verified owner David_Le_ (verified owner) –
Rainbows are very healthy and doing great after settling in for 4 weeks.
Store manager RoxyAquarium –
That’s wonderful to hear, David_Le_! It’s always great to know that your Lake Kutubu Rainbowfish are thriving and settling in well. These vibrant freshwater species from Papua New Guinea’s Lake Kutubu truly add a stunning touch to any community aquarium. With their peaceful nature, they can peacefully coexist with other tank mates, creating a harmonious environment. Furthermore, observing the male Rainbowfish during their courtship displays must be a captivating spectacle, especially when they showcase their brightest hues. It’s truly fascinating to witness the natural beauty and behavior of these fish. Keep up the good work in providing a suitable and healthy environment for your Rainbowfish!