Cardinal Tetra Fish (Paracheirodon axelrodi) – Nano Freshwater Aquarium Fish

A vibrant schooling nano fish known for its striking red and blue coloration, perfect for peaceful community aquariums.

• Bright red stripe runs full body length
• Peaceful and ideal for community tanks
• Best kept in groups of 6 or more
• Thrives in soft, slightly acidic water
• Great for planted and nano aquariums
• Grows up to ~2 inches

Cardinal Tetra Care Guide

• Scientific name: Paracheirodon axelrodi
• Tank size: 10 gallons minimum for a school of 6+
• Water parameters: pH 4.5–7.0, temperature 74–82°F, soft to moderately hard water
• Diet: Omnivore — high-quality flakes, micro pellets, and occasional live or frozen foods like brine shrimp and bloodworms
• Lifespan: 4–5 years with proper care
• Temperament: Peaceful, schooling fish — never keep fewer than 6
• Tank mates: Other peaceful community fish such as neon tetras, corydoras, dwarf gouramis, and small rasboras. Avoid large or aggressive species.
• Cardinal tetra vs. neon tetra: Cardinals have a red stripe running the full length of the body, while neons only show red on the back half — cardinals also tend to be slightly larger and more vibrant.

Note:

• Color and pattern may vary slightly from photos due to natural variation and lighting.
• Fish may appear less vibrant during shipping and regain color after acclimation.
• Price is for one individual fish