Cardinal Tetra (Paracheirodon axelrodi)

Discover the Iconic Cardinal Tetra

The Cardinal Tetra (Paracheirodon axelrodi) is one of the most popular and recognizable freshwater aquarium fish in the world. Famous for its brilliant neon blue stripe and vibrant red coloration, this stunning South American tetra has become a staple in planted aquariums, aquascapes, and community fish tanks throughout Canada. Cardinal Tetra Canada

Native to the blackwater tributaries of the Amazon and Orinoco River basins, Cardinal Tetras thrive in soft, acidic waters rich in tannins and aquatic vegetation. Their vivid coloration creates a spectacular contrast against live plants, driftwood, and dark substrates, making them a favorite among aquascaping enthusiasts and tropical fish hobbyists. Cardinal Tetra Canada

When kept in large schools, Cardinal Tetras create a breathtaking display of synchronized swimming and vibrant color. Their peaceful temperament, manageable size, and compatibility with other community fish make them an excellent choice for both beginner and experienced aquarists. Cardinal Tetra Canada

At Monster Aquarium Canada, we offer healthy, premium-quality Cardinal Tetras with professional live fish shipping available throughout Canada.

Cardinal Tetra Appearance

Brilliant Red and Blue Coloration

The Cardinal Tetra is famous for its vibrant electric blue stripe that runs along the upper body and a bright red stripe extending from head to tail.

More Intense Than Neon Tetras

Unlike Neon Tetras, Cardinal Tetras display a full-length red stripe, creating a more striking and colorful appearance.

Elegant Schooling Fish

Their streamlined body shape and synchronized swimming behavior create a dazzling display in groups.

Perfect for Aquascapes

Their vivid colors stand out beautifully against green plants and natural aquarium décor.

Cardinal Tetra Care Guide

Aquarium Setup

Cardinal Tetras thrive in peaceful, well-maintained aquariums with stable water conditions.

Recommended Aquarium Requirements

Tank Size

• Minimum 20 gallons
• 30 gallons or larger recommended for larger schools

Aquarium Features

• Live plants
• Driftwood and botanicals
• Open swimming areas
• Gentle water movement

Schooling Requirements

• Keep in groups of at least 8 to 10 fish
• Larger schools encourage natural behavior and vibrant displays

Water Parameters

Stable water quality is essential for long-term health and coloration.

Ideal Water Conditions

Temperature

• 73°F – 82°F (23°C – 28°C)

pH

• 4.5 – 7.0

Water Hardness

• Soft to moderately soft

Filtration

• Gentle to moderate filtration

Maintenance

• Weekly water changes recommended

Feeding and Nutrition

Omnivorous Feeding Habits

Cardinal Tetras readily accept a wide variety of foods.

Recommended Foods

Prepared Foods

• Premium tropical flakes
• Micro pellets
• Community fish diets

Frozen Foods

• Bloodworms
• Brine shrimp
• Daphnia

Supplemental Foods

• Freeze-dried foods
• Small live foods

A varied diet helps maintain vibrant coloration and strong overall health.

Why Choose a Cardinal Tetra?

One of the Most Popular Aquarium Fish Worldwide

Cardinal Tetras are prized for their brilliant coloration, peaceful temperament, and ease of care.

Spectacular Schooling Behavior

Large groups create breathtaking displays of synchronized movement and shimmering color.

Perfect for Community Aquariums

Their peaceful nature makes them compatible with a wide variety of freshwater species.

Why Buy from Monster Aquarium Canada?

Premium Tropical Fish Selection

Monster Aquarium Canada offers healthy, premium-quality tetras, community fish, and freshwater aquarium species sourced from trusted suppliers.

Healthy Active Specimens

We carefully select fish with vibrant coloration, excellent condition, and active behavior.

Canada-Wide Live Fish Shipping

Our professional live fish shipping service ensures safe and reliable delivery throughout Canada.

Best Tank Mates for Cardinal Tetra

Compatible Community Fish

Cardinal Tetras thrive with other peaceful tropical fish species.

Recommended Tank Mates

Schooling Fish

• Ember Tetras
• Rummy Nose Tetras
• Diamond Tetras

Community Fish

• Honey Gouramis
• Pencilfish
• Harlequin Rasboras

Bottom Dwellers

• Corydoras Catfish
• Otocinclus
• Kuhli Loaches

Avoid aggressive fish and large predatory species.

Frequently Asked Questions

How large does a Cardinal Tetra grow?

Adult Paracheirodon axelrodi typically reach approximately 2 inches in length.

Are Cardinal Tetras peaceful?

Yes. They are peaceful community fish and are ideal for planted aquariums and tropical community tanks.

How many Cardinal Tetras should be kept together?

A minimum school of 8 to 10 fish is recommended, although larger groups create the most impressive display.

What do Cardinal Tetras eat?

They readily accept flakes, micro pellets, bloodworms, brine shrimp, daphnia, and other small foods.

Are Cardinal Tetras suitable for planted aquariums?

Absolutely. Their vibrant colors and peaceful nature make them one of the best fish for planted tanks and aquascapes