Cardinal Tetras (Paracheirodon axelrodi) are a popular and visually striking species of freshwater aquarium fish known for their vibrant colors and striking appearance. They belong to the Characidae family and are closely related to another well-known species, the Neon Tetra. Here’s some information about Cardinal Tetras:
Source: Ltshears, CC BY-SA 3.0 Appearance: Cardinal Tetras are small fish with an elongated, streamlined body. They are best known for their striking colors, which include a vibrant red stripe that runs the entire length of their body, from the nose to the tail. Below the red stripe, there is a reflective blue-green stripe that adds to their beauty. These colors make Cardinal Tetras highly sought after in the aquarium hobby.
Size: Cardinal Tetras typically grow to about 1.5 inches (3.8 centimeters) in length.
Temperament: They are known for their peaceful and schooling nature. Cardinal Tetras should be kept in groups of at least six or more to make them feel secure and encourage their natural schooling behavior.
Aquarium Setup: Cardinal Tetras thrive in well-planted aquariums with hiding spots and open swimming areas. A tank size of 10 gallons or more is suitable for a school of Cardinal Tetras. They prefer water movement, so a gentle filter flow is beneficial.
Source: CHUCAO, CC BY-SA 3.0 Water Parameters: Cardinal Tetras prefer slightly acidic to neutral water conditions with a pH range of 5.5 to 7.0 and a temperature range of 73-81°F (23-27°C). Maintaining stable water conditions, especially with regards to water parameters, is essential for their well-being.
Diet: They are omnivorous and will accept a variety of foods. Cardinal Tetras can be fed high-quality flake or pellet food, live or frozen foods like brine shrimp, bloodworms, and daphnia. A balanced diet is crucial for their health and coloration.
Health and Care: Cardinal Tetras are generally hardy but can be susceptible to common fish diseases. Regular water changes, good filtration, and proper maintenance are essential to maintain their health. They are sensitive to temperature fluctuations and should be kept in a stable environment.
Cardinal Tetras are admired for their stunning appearance and peaceful nature, making them a popular choice for aquarists looking to add a splash of color to their community aquarium. When kept in a well-maintained tank with stable water conditions and suitable tankmates, Cardinal Tetras can create a captivating and visually pleasing display.