Cardinal Tetra – Paracheirodon axelrodi

The Cardinal Tetra (Paracheirodon axelrodi) is a small, colorful freshwater fish popular among aquarists for its vibrant blue and red coloration. Known for its peaceful nature and schooling behavior, this species makes a stunning addition to community tanks.

Description:

Common Name: Cardinal Tetra

Scientific Name: Paracheirodon axelrodi

Family: Characidae

Size: 1.5-2 inches (3.8-5 cm)

Temperament: Peaceful and social; best kept in schools.

Difficulty: Easy

Native Region:

Native to the blackwater rivers and streams of the Amazon Basin in South America, particularly in Brazil and Colombia, where it thrives in densely vegetated areas.

Aquarium Setup:

Tank Size: Minimum of 10 gallons

Temperature: 73-82F (23-28C)

pH: 5.5-7.5

Hardness: Soft to moderately hard water

Substrate: Fine gravel or sand with plenty of plants, driftwood, and open swimming space.

Additional Tips:

Social Behavior: Best kept in groups of six or more to enhance their natural schooling behavior and reduce stress.

Compatibility: Compatible with other small, peaceful fish such as rasboras, dwarf cichlids, and small catfish. Avoid aggressive species.

Diet: Omnivorous; provide high-quality flakes, micro pellets, and occasional live or frozen foods like daphnia and brine shrimp for optimal health.