Cardinal Tetra

The Cardinal Tetra (Paracheirodon axelrodi) is a mesmerizing freshwater fish that adds a vibrant touch to any aquarium. Native to the upper reaches of the Orinoco and Negro Rivers in South America, these captivating creatures are renowned for their striking coloration and peaceful nature, making them a beloved choice among aquarists worldwide.

Their appearance is truly breathtaking. A vibrant blue stripe, shimmering with an iridescent sheen, runs the length of their body, bisecting them perfectly. Below this dazzling blue line, a vivid red stripe extends from head to tail, creating a striking contrast against their silvery sides. This combination of colors, reminiscent of a cardinal's plumage, is what lends them their captivating name.

Beyond their visual appeal, Cardinal Tetras are known for their peaceful and social nature. They are happiest when kept in schools of at least six individuals, where they display a mesmerizing display of coordinated movement, darting and swirling through the water column like a shimmering cloud. This schooling behavior is not merely aesthetic; it is a crucial aspect of their well-being, providing them with a sense of security and reducing stress levels.

In addition to their visual appeal and social behavior, Cardinal Tetras are relatively easy to care for, making them an excellent choice for both novice and experienced aquarists. They are adaptable to a range of water conditions and thrive in well-maintained aquariums with proper filtration and regular water changes.

By providing them with a suitable environment and compatible tank mates, you can enjoy the vibrant beauty and peaceful presence of Cardinal Tetras, a true gem of the aquatic world.

Key Characteristics:

• Size: They grow to a maximum size of around 1.2 inches (3 cm).
• Coloration: Their most striking feature is the fluorescent blue stripe running laterally throughout their body, with a vibrant red stripe below it. These stripes extend the full length of their body, from nose to tail.
• Temperament: Cardinal Tetras are peaceful and social fish, making them excellent additions to community aquariums. They are happiest when kept in schools of at least six individuals.
• Care Requirements:
  • Water Parameters: They thrive in slightly acidic to neutral water with a pH of 5.5-7.0, a temperature range of 73-80°F (23-27°C), and soft to moderately hard water.
  • Diet: They are omnivores and can be fed a variety of flake foods, frozen foods like bloodworms and brine shrimp, and live foods like daphnia and mosquito larvae.
  • Tank Setup: A well-planted aquarium with plenty of hiding spots is ideal for these fish. They enjoy swimming in the middle and upper levels of the water column.

Compatibility:

Cardinal Tetras are peaceful and can coexist with a wide range of other peaceful community fish, including:

• Other Tetras: Neon Tetras, Glowlight Tetras, Rummynose Tetras, Black Skirt Tetras
• Rasboras: Harlequin Rasboras, Scissortail Rasboras
• Danios: Zebra Danios, Celestial Pearl Danios
• Corydoras Catfish: Peppered Corydoras, Panda Corydoras
• Dwarf Gouramis: Honey Gourami, Sparkling Gourami
• Kuhlis Loaches
• Otocinclus Catfish

Important Considerations:

• Schooling Behavior: Keeping them in schools of at least six individuals is crucial for their well-being and to showcase their natural behavior.
• Water Quality: Maintaining good water quality is essential for their health. Regular water changes and proper filtration are necessary.

By providing the right tank conditions and compatible tank mates, you can enjoy the vibrant beauty and peaceful presence of Cardinal Tetras in your aquarium.