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Basics

Scientific Name: Paracheirodon axelrodi

Family: Crenuchidae

Origin: South America

Quick Facts

• Care Level: Easy
• Temperament: Peaceful
• Lifespan: 3-5 years
• Water Conditions: 72-80° F, KH 2-6, pH 5.5-7.5
• Maximum Size: 2"
• Diet: Omnivore
• Minimum Tank Size: 5 gallons

Overview

Cardinal Tetras are a very popular freshwater fish due to their ease of care for beginners and stunning coloration. They have vibrant, iridescent blue bodies and bright red stripe that runs down its entire body, compared to the Neon Tetra which only has the red stripe on half.

They will appreciate a planted tank with plenty of hiding places and dim lighting. A schooling fish, they feel the most secure in groups of at least 6 but even larger is preferable and many of them will create a beautiful display of color in a peaceful community aquarium. Since these fish can be sensitive to nitrate levels, it is ideal to stay on top of water changes and make sure your water is always at optimal quality. This is especially important if they are being kept in a small tank that will require more maintenance. They should not be added to a tank that hasn't been properly cycled. 

They will eat small live or frozen foods like brine shrimp or daphnia but will also readily accept high quality micro pellet and flake foods. They will also enjoy bloodworms and tubifex, whether they are live, frozen or freeze dried. 

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