
Cardinal Tetra - Paracheirodon axelrodi
Cardinal Tetra (Paracheirodon axelrodi) The Cardinal Tetra (Paracheirodon axelrodi) is a dazzling freshwater fish known for its vivid red and blue coloration. Highly prized in the aquarium hobby, this small, peaceful species is ideal for community tanks due to its vibrant appearance and active schooling behavior. Description: • Common Name: Cardinal Tetra • Scientific Name: Paracheirodon axelrodi • Family: Characidae • Size: Up to 2.5 inches (6.5 cm) • Color: Brilliant blue body with a prominent red stripe extending from the middle of the body to the base of the tail. The colors are intensified under proper lighting conditions. Native Region: The Cardinal Tetra is native to the Rio Orinoco and Rio Negro river systems in Venezuela and Brazil. These regions feature slow-moving, blackwater rivers with soft, acidic conditions and dense aquatic vegetation. Aquarium Setup: • Tank Size: Minimum of 20 gallons (75 liters) for a small school • Water Parameters: • Temperature: 73-81°F (