Cardinal Tetra (Paracheirodon axelrodi)

Cardinal Tetra (Paracheirodon axelrodi)

Common Names: Cardinal Tetra
Scientific Name: Paracheirodon axelrodi
Native Location: South America
Climate: Tropical
Size: 1 – 1.5 inches (2.5 – 3.8 cm)
Temperament: Peaceful
Diet: Omnivore
Breeding: Moderate
Temperature Range: 22.7 – 27.2°C (73 – 81°F)
Preferred pH Range: 5.5 – 7.0
KH Range: 4 – 8 dKH
Minimum Aquarium Size: 10 gallons
Potential Tankmates: Other small, peaceful fish, adult dwarf shrimp, larger peaceful invertebrates
Care Level: Easy

Introduction

The Cardinal Tetra is a popular and vibrant schooling fish, known for its striking neon red and blue coloration. Slightly larger and more robust than the Neon Tetra, it is a favorite among aquarium enthusiasts. Its care and behavior are similar to Neon Tetras, making it an excellent choice for community tanks.

Physical Characteristics

• Vivid neon blue and red stripes covering almost the entire body

• More pronounced coloration than Neon Tetras

• Small, elegant fish that adds a dazzling display to any aquarium

Behavior and Compatibility

• Peaceful schooling fish; best kept in groups of six or more

• Primarily occupies the top and middle water column, occasionally feeding at the bottom

• Compatible with other small, peaceful fish and larger peaceful invertebrates

• Adult dwarf shrimp are usually safe, but Cardinal Tetras may eat smaller shrimp and fry

Diet and Feeding

• Omnivorous and not picky

• Accepts high-quality flake foods, pellets, and frozen or freeze-dried tubifex and bloodworms

• A varied diet rich in meaty foods maintains vibrant coloration

Tank Setup and Care

• Tank Size: Minimum 10 gallons

• Water Conditions: Temperature 22.7 – 27.2°C (73 – 81°F), pH 5.5 – 7.0, KH 4 – 8 dKH

• Substrate and Decor: Soft, acidic water; leaf litter and tannins; aquatic plants and hiding spots to mimic natural habitat

• Peaceful schooling fish that thrives in planted aquariums

Breeding

Breeding Cardinal Tetras can be moderately challenging. They require soft, acidic water and low light conditions. A separate breeding tank with fine-leaved plants for egg deposition improves success. Adults should be removed after spawning to prevent egg predation.

What We Like About This Fish

• Coloration: Neon red and blue stripes make them stand out

• Disposition: Peaceful and community-friendly

• Activity Level: Very active, adding movement to the tank

• Tank Levels: Primarily top and middle water column

Cardinal Tetras are a stunning and peaceful addition to any community aquarium. Their vibrant colors, schooling behavior, and active nature bring life and visual appeal. Easy to care for, they are suitable for both beginners and experienced aquarists. A well-planted tank with soft, slightly acidic water and a varied diet will ensure they thrive and display their best colors.

Sample photo is for reference only. Exact fish may vary in size and colour.