Cardinal Tetra

Cardinal Tetra (Paracheirodon axelrodi)

The Cardinal Tetra is one of the most iconic and beautiful freshwater schooling fish in the aquarium hobby. Famous for its brilliant neon blue stripe and vibrant red coloration that extends the full length of its body, this stunning species adds incredible color and movement to planted aquariums and community tanks. When kept in a school, Cardinal Tetras create a dazzling display as they move together through the aquarium.

Native to the blackwater tributaries of the Amazon River, Cardinal Tetras thrive in well-maintained aquariums with stable water conditions, plants, driftwood, and subdued lighting. Their vibrant colors stand out beautifully against natural aquascapes, making them a favorite among aquascapers and freshwater enthusiasts worldwide.

Cardinal Tetras are peaceful fish that do best when kept in groups of six or more, though larger schools often display more natural behavior and create a more impressive visual effect. Their calm temperament makes them excellent tank mates for angelfish, dwarf cichlids, Corydoras, rasboras, and other peaceful community species.

Scientific Name: Paracheirodon axelrodi
Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Adult Size: Up to 2 Inches
Minimum Tank Size: 20 Gallons
Origin: South America
Plant Safe: Yes

If you're looking for a colorful, peaceful, and highly active schooling fish, the Cardinal Tetra is an outstanding choice. Its brilliant red and blue coloration, graceful schooling behavior, and compatibility with planted aquariums have made it a staple of freshwater fishkeeping for generations.