Arguably the most popular of the small tetras, the cardinal tetra is similar in appearance to a longtime aquarium favorite, the neon tetra. Cardinal tetras are an active schooling fish and they live well in a peaceful community aquarium. Although they are difficult to breed in captivity, tetras remain a very popular aquarium fish.
COMMON NAMES: Cardinal tetra
SCIENTIFIC NAME: Paracheirodon axelrodi
ADULT SIZE: 2 inches (5 cm)
LIFE EXPECTANCY: Four years