Red/Blue Columbian Tetra

Red/Blue Columbian Tetra
Latin name:
(Hyphessobrycon colimbianus)

Care Level





Blue, Red



Preferred Conditions

72-77° F, KH 4-8, pH 6.0-6.5

Avg. Max Size


Minimum Tank Size

10 gallons


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Are you looking to add a vibrant splash of color to your aquarium? Look no further than the Red/Blue Columbian Tetra, a captivating fish that’s sure to turn heads. With its striking red and blue coloration, this fish is a true eye-catcher that will add life and energy to your underwater world.

Meet the Red/Blue Columbian Tetra

The Red/Blue Columbian Tetra, scientifically known as Hyphessobrycon erythrostigma, is a small, schooling fish native to the Orinoco River basin in South America. These fish are characterized by their vibrant red and blue coloration, with the males typically displaying more intense colors than the females. They have a slender, torpedo-shaped body with a forked tail and can grow up to 2 inches in length.

Natural Habitat and Behavior

In their natural habitat, Red/Blue Columbian Tetras inhabit clear, slow-moving waters with plenty of vegetation. They are schooling fish, meaning they prefer to live in groups, and they are known for their peaceful and social behavior. These fish are active swimmers and enjoy exploring their surroundings, making them a joy to watch in an aquarium.

Creating the Ideal Home for Your Red/Blue Columbian Tetras

To ensure the well-being and happiness of your Red/Blue Columbian Tetras, it’s essential to provide them with a suitable environment that mimics their natural habitat. Here are some key considerations:

Tank Size and Setup

Red/Blue Columbian Tetras require a tank size of at least 10 gallons, but a larger tank is always better. The tank should have a tight-fitting lid to prevent the fish from jumping out. The substrate should be fine sand or gravel, and the tank should be decorated with live plants and driftwood to provide hiding places and a natural feel.

Water Parameters

Red/Blue Columbian Tetras prefer slightly acidic water with a pH between 6.0 and 7.0. The water should also be soft to moderately hard, with a hardness range of 5 to 15 dGH. The ideal temperature range for these fish is between 72°F and 82°F.

Filtration and Maintenance

Red/Blue Columbian Tetras require clean, well-oxygenated water, so a good filtration system is essential. Regular water changes of about 20% every two weeks are also necessary to maintain water quality and prevent the buildup of harmful toxins.

Feeding Your Red/Blue Columbian Tetras

Red/Blue Columbian Tetras are omnivorous and will readily accept a variety of foods. A balanced diet should include high-quality flake food, frozen or live brine shrimp, daphnia, and bloodworms. It’s important to feed your fish small amounts several times a day rather than one large meal.

Breeding Red/Blue Columbian Tetras

Breeding Red/Blue Columbian Tetras is possible in a home aquarium, but it requires careful planning and preparation. A separate breeding tank is recommended, and the water parameters should be closely monitored. The fish should be conditioned with live or frozen foods, and the breeding tank should be decorated with fine-leaved plants for the eggs to attach to.

FAQs About Red/Blue Columbian Tetras

  1. Q: Are Red/Blue Columbian Tetras easy to care for?
    A: Yes, Red/Blue Columbian Tetras are generally easy to care for, making them suitable for both beginner and experienced aquarists.
  2. Q: How many Red/Blue Columbian Tetras should I keep together?
    A: Red/Blue Columbian Tetras are schooling fish and should be kept in groups of at least 6-8 individuals. This will help them feel secure and display their natural behavior.
  3. Q: Can Red/Blue Columbian Tetras be kept with other fish?
    A: Yes, Red/Blue Columbian Tetras can be kept with other peaceful community fish of similar size and temperament. Avoid keeping them with aggressive or fin-nipping species.


The Red/Blue Columbian Tetra is a vibrant and captivating fish that adds a splash of color and energy to any aquarium. With their peaceful nature and easy care requirements, these fish are a great choice for both beginner and experienced aquarists. Whether you’re just starting out or looking to add a new species to your existing aquarium, the Red/Blue Columbian Tetra is sure to impress.