The Cardinal Tetra (Paracheirodon axelrodi) is one of the most iconic freshwater fish in the aquarium hobby. Known for its brilliant red and blue horizontal stripes that run the full length of the body, this species brings movement and colour to any aquascape.
Native to the slow-flowing rivers of the Amazon Basin, Cardinal Tetras are best kept in groups and thrive in peaceful, well-planted aquariums.
🌿 Species Highlights:
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Scientific name: Paracheirodon axelrodi
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Common name: Cardinal Tetra
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Adult size: 3–5 cm
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Temperament: Peaceful schooling fish
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Diet: Micropellets, flake foods, frozen or live daphnia, brine shrimp
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Tank size: Minimum 60 L for a small school
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Water parameters:
– Temperature: 24–28 °C
– pH: 5.0–7.0
– Soft, slightly acidic water preferred
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Lifespan: 4–5 years
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Compatibility: Excellent with corydoras, rasboras, gouramis, and other peaceful community species
Care Tips:
Keep Cardinals in groups of at least six or more to reduce stress and bring out their full colouration. Provide driftwood, plants, and subdued lighting to replicate their natural Amazon habitat.
Why We Love Them:
✔ Intense neon blue and red colouration
✔ Peaceful nature and easy care
✔ Perfect for planted or community tanks
✔ Schooling behaviour adds dynamic movement
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