The Paracheirodon axelrodi, commonly known as the Cardinal Tetra, is a breathtaking freshwater fish native to the blackwater streams of the upper Orinoco and Negro river basins in South America.
Often confused with its famous cousin the Neon Tetra, the Cardinal is distinguished by its more intense, full-body red stripe that runs the entire length of its lower flank, contrasting brilliantly with the electric blue stripe above.
Growing slightly larger than the Neon at 4-5 centimetres, Cardinals are renowned for their stunning colouration that glows like neon lights against dark substrates and lush green plants, making them a spectacular focal point in any well-planted aquarium.
As highly social creatures, Cardinal Tetras must be kept in schools of at least 6-10 individuals to feel secure and display natural behaviour—solitary specimens become stressed, pale, and reclusive. In proper groups, they are lively and confident, occupying the middle water levels where their shimmering stripes catch the light.
These peaceful fish are excellent community inhabitants, compatible with a wide range of similarly sized, non-aggressive species such as rasboras, Corydoras, dwarf cichlids, and other tetras.
Omnivorous by nature, they require tiny foods such as crushed high-quality flakes, micro-pellets, and small live or frozen offerings like daphnia and baby brine shrimp to maintain their intense colouration.
They thrive in soft, acidic water with dimmed lighting or floating plants to replicate their natural blackwater habitat.
With proper care including regular water changes and stable parameters, Cardinal Tetras typically live 3-5 years, making them exquisite, glowing additions to peaceful community aquariums.
The Paracheirodon axelrodi, commonly known as the Cardinal Tetra, is a breathtaking freshwater fish native to the blackwater streams of the upper Orinoco and Negro river basins in South America.
Often confused with its famous cousin the Neon Tetra, the Cardinal is distinguished by its more intense, full-body red stripe that runs the entire length of its lower flank, contrasting brilliantly with the electric blue stripe above.
Growing slightly larger than the Neon at 4-5 centimetres, Cardinals are renowned for their stunning colouration that glows like neon lights against dark substrates and lush green plants, making them a spectacular focal point in any well-planted aquarium.
As highly social creatures, Cardinal Tetras must be kept in schools of at least 6-10 individuals to feel secure and display natural behaviour—solitary specimens become stressed, pale, and reclusive. In proper groups, they are lively and confident, occupying the middle water levels where their shimmering stripes catch the light.
These peaceful fish are excellent community inhabitants, compatible with a wide range of similarly sized, non-aggressive species such as rasboras, Corydoras, dwarf cichlids, and other tetras.
Omnivorous by nature, they require tiny foods such as crushed high-quality flakes, micro-pellets, and small live or frozen offerings like daphnia and baby brine shrimp to maintain their intense colouration.
They thrive in soft, acidic water with dimmed lighting or floating plants to replicate their natural blackwater habitat.
With proper care including regular water changes and stable parameters, Cardinal Tetras typically live 3-5 years, making them exquisite, glowing additions to peaceful community aquariums.
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