Species, Freshwater fish, Rainbowfish

Lake Tebera Rainbowfish (Melanotaenia herbertaxelrodi)

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by Jason Matthews



The Lake Tebera Rainbowfish is a stunning species that has captivated fish owners and enthusiasts. This species is popular among pet fish owners who want to add color and beauty to their aquariums.

Whether you’re a novice or an experienced fish owner, this article will teach you everything you need to know about the Lake Tebera Rainbowfish, including its origin, appearance, size, and behavior, among other things. So, sit back, relax, and let’s dive into the world of Lake Tebera Rainbowfish.


Scientific Name: Melanotaenia herbertaxelrodi
Common Names: Lake tebera rainbowfish
Life Expectancy: 6-8 years
Adult Size: 12 cm (4.7 inches)


HabitatFreshwater rivers and streams
Care LevelModerate
DietPrimarily omnivorous – flakes, pellets, live or frozen foods
Tank LevelMid to upper level
Minimum Tank Size20 gallons (75 liters)
Water pH6.5-8.0
Water Temperature72-82°F (22-28°C)
Water HardnessSoft to moderately hard
LightingModerate to high
Tank MatesPeaceful community fish, avoid aggressive or fin-nipping species

Fun Fact Corner

Did you know that Lake Tebera Rainbowfish are known for their vibrant, shimmering colors? Their iridescent scales reflect light and produce a beautiful rainbow effect. This dazzling display is especially noticeable during the breeding season, when males display their colors to attract a mate. 


The Lake Tebera Rainbowfish, also known as Herbert Axelrod’s Rainbowfish, is native to Papua New Guinea’s Lake Tebera region. This species is a Melanotaeniidae family member and one of the most beautiful rainbowfish species. The Lake Tebera Rainbowfish is native to the Lake Tebera region’s streams and rivers, where it thrives in warm, clear water. 

Appearance & Size

The Lake Tebera Rainbowfish body is long and slender, silver in color with iridescent blue, green, and yellow markings. The fins are also brightly colored, with a bold red band on the dorsal fin and a yellow-green band on the tail fin. 

The Lake Tebera Rainbowfish is a relatively small species, with adults typically reaching an average length of 4-5 inches. This species is a great choice for those with smaller aquariums, as it does not require a lot of space to thrive


The Lake Tebera Rainbowfish is a species with distinct male and female characteristics. Male Lake Tebera Rainbowfish are more colorful than females, with more vibrant and pronounced markings. Males are also slightly larger in stature than females. These distinctions make it relatively simple for fish owners to distinguish between sexes and determine which individuals are male and female.


Lake Tebera Rainbowfish live in large schools in the wild and are known for their dynamic and playful behavior. This species is also known for being peaceful and non-aggressive to other fish. 


The Lake Tebera Rainbowfish are peaceful and non-aggressive, so it is best to choose tankmates with similar size and temperament who are also friendly and non-threatening. 

Good tankmates for Lake Tebera Rainbowfish include:

Tank conditions

It is critical to maintain proper tank conditions for the health and well-being of Lake Tebera Rainbowfish. This species is native to Papua New Guinea’s slow-moving streams and rivers. It is critical to recreate a similar environment in the aquarium. The ideal water temperature for Lake Tebera Rainbowfish is 72-82°F, with a pH of 6.5-7.5. Provide adequate filtration to maintain water quality and reduce waste produced by the fish..


Lake Tebera Rainbowfish are omnivorous, meaning they eat plant- and animal-based foods. This species feeds on small insects, crustaceans, and plant matter in the wild. A healthy diet for Lake Tebera Rainbowfish should include high-quality dry foods like a flake or pellet food and fresh or frozen foods like brine shrimp, daphnia, or bloodworms. Live foods such as small insects or worms can be provided as a treat.

Overfeeding can lead to poor water quality and health issues for the fish, so it is best to feed them small amounts several times a day rather than a large amount all at once.


Breeding Lake Tebera Rainbowfish in the home aquarium is a rewarding experience for the avid aquarist. These fish are relatively easy to breed, and they will reproduce readily with proper conditions and a healthy diet. To encourage breeding, provide the fish with a large, well-maintained aquarium with good water quality and a consistent temperature. 

The water temperature should be between 75 and 82 degrees Fahrenheit, and the pH should be between 7.0 and 8.0. It is also critical to provide plenty of hiding places for the fish to lay their eggs, such as caves or planted areas.

To attract the female’s attention, the male will chase her and display his fins. After the female lays her eggs, the male fertilizes them, and the eggs hatch in about three days.

Providing adequate care for the fry as they grow and develop is critical. Until the fry is large enough to consume larger foods, they should be fed a diet of small, live foods such as baby brine shrimp or microworms.


Lake Tebera Rainbowfish are tough fish, but like all fish, they are susceptible to disease. Bacterial, fungal, and parasites are some of the most common illnesses to watch out for. To avoid these problems, keep the tank clean and healthy, provide a balanced diet, and watch for any signs of disease.

Listlessness, loss of appetite, white spots on the body, and unusual swimming behavior are common symptoms to look for. If you notice these symptoms, act quickly to prevent the disease from spreading to the other fish in the tank. Depending on the illness, this may entail changing the water, adding aquarium salt, or administering medication.

It’s also critical to prevent disease by properly acclimating new fish to the tank before introducing them, avoiding overstocking the tank, and quarantining any sick fish before adding them. Regular water tests and tank maintenance will also aid in the health and disease-free survival of your Lake Tebera Rainbowfish.


Jason Matthews

My name is Jason Matthews, and welcome to my website. When other kids were bragging about how their dog could sit and roll over, I was bragging about my latest Betta Fish and the cool sea castle I just added to his aquarium. 

Jason aquariume

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