Cardinal Tetras, scientifically known as Paracheirodon axelrodi, are a popular species of freshwater fish admired for their vibrant colors and peaceful nature. With their striking red and blue coloration, Cardinal Tetras add a burst of color and elegance to any aquarium. Let's explore a detailed description of these remarkable fish, including essential information on water conditions, tank mates, feeding habits, and care.

Appearance:

• Vibrant Coloration: Cardinal Tetras feature a beautiful combination of bright red and iridescent blue colors. A vertical blue stripe runs along the length of their body, contrasting with the vibrant red lower body.
• Size: Cardinal Tetras typically grow to a size of around 1.5 to 2 inches (4 to 5 cm), making them suitable for small to medium-sized aquariums.

Water Conditions:

• Temperature: Maintain a tropical water temperature range of 75°F to 82°F (24°C to 28°C) to ensure the well-being of Cardinal Tetras.
• pH Level: Aim for a slightly acidic to neutral pH level between 6.0 and 7.5 to replicate their natural habitat.
• Water Hardness: Provide a soft to moderately hard water condition with a hardness level between 2 and 10 dGH.
• Filtration: Efficient filtration and regular water changes are necessary to maintain excellent water quality.

Tank Mates:

• Peaceful Community Fish: Cardinal Tetras are peaceful and can be kept with other non-aggressive fish species such as peaceful Tetras, Rasboras, and small Corydoras.
• Avoid Aggressive or Fin-Nipping Fish: It is important to avoid aggressive or fin-nipping tank mates that could stress or harm the Cardinal Tetras.

Feeding Habit:

• Omnivorous Diet: Cardinal Tetras are omnivores and will accept a variety of foods.
• High-Quality Pellets and Flakes: Offer a balanced diet of high-quality tropical fish pellets or flakes.
• Supplementary Foods: Supplement their diet with occasional live or frozen foods such as brine shrimp, bloodworms, or daphnia to provide variety and enhance their nutrition.

Care:

• Tank Size: Provide a suitable aquarium of at least 10 gallons (38 liters) to accommodate Cardinal Tetras comfortably, allowing ample swimming space and a school of at least six individuals.
• Aquascape: Create a well-decorated tank with live plants, rocks, and driftwood to mimic their natural habitat and provide hiding spots.
• Water Quality: Regularly monitor water parameters and perform routine water changes to maintain excellent water quality.
• Lighting: Provide moderate lighting levels, and use floating or submerged plants to offer shade and create a natural environment.