Paracheirodon axelrodi, also known as the Cardinal Tetra, is a small, vibrant fish with striking red and blue colors, ideal for community aquariums.
Overview
Paracheirodon axelrodi, commonly known as the Cardinal Tetra, is a small and visually stunning fish native to the Rio Orinoco and Rio Negro in South America. Characterized by its brilliant red body and vibrant blue stripes, the Cardinal Tetra is a favorite among aquarists for its striking appearance and peaceful demeanor. This species is often compared to the Neon Tetra, but the Cardinal Tetra is distinguished by its more intense coloration.
Tank Requirements
Cardinal Tetras thrive in a well-maintained aquarium with a minimum volume of 40 liters. They prefer slightly acidic to neutral water conditions, with a pH between 5.5 and 7.0, and a temperature range of 24-28°C. Use a soft substrate and provide plenty of plants, driftwood, and hiding spots to create a natural and secure environment. Good filtration and regular water changes are crucial to maintaining optimal water quality.
Feeding and Diet
Paracheirodon axelrodi is an omnivorous fish that enjoys a varied diet. In the wild, they feed on small insects, worms, and plant material. In the aquarium, they will accept high-quality flake food, micro pellets, and live or frozen foods such as brine shrimp, daphnia, and bloodworms. Offering a diverse diet will help enhance their coloration and ensure their health and vitality.
Care and Maintenance
To care for Cardinal Tetras, focus on maintaining stable water conditions and providing a balanced diet. Perform weekly water changes of 20-30% to keep the water clean and healthy. Monitor the fish for common health issues like fin rot or white spot disease, and address any problems promptly. A stable and clean environment is essential for their well-being.
Compatibility
Cardinal Tetras are known for their peaceful and social nature, making them ideal for community tanks. They get along well with other small, non-aggressive fish such as other tetras, rasboras, and small cichlids. Avoid housing them with larger or more aggressive species that may pose a threat. Keeping them in groups of at least six will help them feel secure and display natural schooling behavior.
Breeding
Breeding Paracheirodon axelrodi in captivity can be challenging but rewarding. Set up a separate breeding tank with soft, slightly acidic water and a temperature around 26-28°C. Provide spawning mops or fine-leaved plants for egg deposition. After spawning, remove the adults to prevent them from eating the eggs. The eggs will hatch in about 3-4 days, and the fry can be fed infusoria or powdered fry food until they are large enough to eat regular foods.