Rosy Tetra

Rosy Tetra (Hyphessobrycon rosaceus)

Another week, another fish! This week we will dive into the world of the vibrant Rosy Tetra, also known as Hyphessobrycon rosaceus, which adds a splash of color and excitement to any tank. With its captivating beauty and lively personality, the Rosy Tetra is a favorite among aquarists of all levels. Join us as we take a look at this delightful fish and learn how to care for it in your own aquarium.

Size and appearance

The Rosy Tetra is a small but stunning fish, typically growing to a size of 3-4 centimeters (1.2-1.6 inches). Its slender body is adorned with vibrant shades of pink and silver, while its fins display delicate hints of red and white. With its graceful movements and shimmering colors, the Rosy Tetra is sure to catch the eye of any observer.


Native to the freshwater streams and tributaries of South America, the Rosy Tetra is commonly found in regions such as Brazil and Peru. It thrives in warm, tropical waters with lush vegetation and gentle water flow.


The Rosy Tetra is known for its peaceful demeanor, making it an excellent addition to community aquariums. It enjoys swimming in schools, so it’s best kept in groups of six or more. Despite its small size, the Rosy Tetra can be quite active and playful, darting around the tank and exploring its surroundings with curiosity.


As an omnivorous species, the Rosy Tetra enjoys a varied diet consisting of both plant and animal matter. In the wild, it feeds on algae, small insects, and zooplankton. In captivity, it readily accepts high-quality flake or pellet foods supplemented with occasional treats like frozen or live foods such as bloodworms or brine shrimp.

How to keep the Rosy Tetra at home

Caring for Rosy Tetras in the home aquarium is relatively straightforward, but there are some key considerations to keep in mind:

Tank size: A minimum tank size of 40 liters (10 gallons) is recommended for a small school of Rosy Tetras. Ensure the tank is well-planted with plenty of hiding spots and open swimming areas.
Water parameters: Maintain a stable water temperature between 22-26°C (72-79°F) and a pH level ranging from 6.0 to 7.5. Regular water changes and filtration are essential to maintain optimal water quality.
Tank mates: Rosy Tetras are peaceful fish that can coexist with a wide range of tank mates, including other peaceful community fish like tetras, rasboras, and livebearers. Avoid keeping them with aggressive or fin-nipping species.
Dangers and risks: While Rosy Tetras are generally hardy and disease-resistant, they can be sensitive to sudden changes in water parameters. Monitor water quality closely and avoid overcrowding the tank to prevent stress-related illnesses.

With their dazzling colors and gentle disposition, Rosy Tetras are sure to bring joy and beauty to any aquarium. By providing them with a suitable environment and a balanced diet, you can enjoy watching these delightful fish thrive in your own home.

Scientific nameHyphessobrycon rosaceus
Type of aquariumFreshwater
Size3-4 centimeters (1.2-1.6 inches)
RegionSouth America
Ideal tank sizeMinimum 40 liters (10 gallons)
Ideal water temperature22-26°C (72-79°F)
ReproductionEgg scatterer
Life span3-5 years

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