Cardinal Tetra (Paracheirodon axelrodi): Miniature Elegance in the Aquarium
Water Type: Native to the Rio Negro basin in South America, Cardinal Tetras prefer mild to moderately hard water with a pH between 4.0 and 7.0.
Temperature: The ideal temperature for Cardinal Tetras is 23-27°C.
Aquarium Size: For a group of Cardinal Tetras, an aquarium of at least 38 liters is recommended. They like to swim in groups and feel safer in company.
Care and Behavior: They are peaceful and active fish. They feed on dry, live food. Provides places to hide and plants in the aquarium. They like greenery.
Reproduction: Breeding in captivity can be challenging. They are egg spawners and rearing may require specific conditions.
Possible Diseases: As with many fish, they can be susceptible to common diseases. Keep the water clean and avoid sudden changes.
Sexual Dimorphism: In general, there are no obvious differences between males and females in color and size.
Colors and Varieties: Cardinal Tetras are known for their vibrant coloration, which includes a red band on the top of their body and a blue band on the bottom.
History and Origin: Native to rivers and streams in the Rio Negro basin in Brazil, the Tetras Cardenales were discovered in the 1930s.
Adaptability and Popularity: They are very popular fish in community aquariums due to their beauty and calm demeanor. They are often kept alongside other fish from the same region.
Trivia:
- Reflective Colors: The red band of the Cardinal Tetras can appear fluorescent under proper lighting, creating an eye-catching effect.
- Natural Habitat: Its natural habitat on the Rio Negro is known for its dark, acidic waters.
Weight and Size: Cardinal Tetras are small fish, reaching approximately 3 cm in length. Although their weight is light, their beauty makes them stand out in community aquariums.
