Black Skirt Tetra (Gymnocorymbus ternetzi)

Discover the Classic Black Skirt Tetra

The Black Skirt Tetra (Gymnocorymbus ternetzi) is one of the most popular and reliable freshwater community fish in the aquarium hobby. Known for its distinctive black vertical markings, flowing fins, and active schooling behavior, this attractive South American species has been a favorite among aquarists for generations. Black Skirt Tetra Canada

Native to the rivers and tributaries of Paraguay, Bolivia, and Brazil, the Black Skirt Tetra is highly adaptable and thrives in a wide variety of aquarium environments. Its striking silver body combined with bold black bands creates an elegant appearance that complements both planted aquariums and traditional community fish tanks.

Thanks to its hardy nature, peaceful temperament, and ease of care, the Black Skirt Tetra is an excellent choice for beginners while still being appreciated by experienced aquarists. When maintained in schools, these fish display natural social behavior and create a lively, dynamic display in the aquarium.

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

Black Skirt Tetra Appearance

Distinctive Black Vertical Bands

The defining feature of Gymnocorymbus ternetzi is its bold black bands that extend across the body, creating a striking contrast against its silver coloration.

Elegant Flowing Fins

Adult specimens develop attractive dorsal and anal fins that enhance their graceful appearance.

Deep-Bodied Tetra Profile

Their classic tetra body shape gives them a strong and elegant presence in community aquariums.

Beautiful Schooling Display

Groups of Black Skirt Tetras create an attractive display as they swim together through the aquarium.

Black Skirt Tetra Care Guide

Aquarium Setup

Black Skirt Tetras are adaptable fish that thrive in community aquariums with stable water conditions.

Recommended Aquarium Requirements

Tank Size

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

Aquarium Features

• Open swimming areas
• Live plants
• Driftwood and natural décor
• Moderate water movement

Schooling Requirements

• Keep in groups of at least 6 fish
• Larger groups encourage natural behavior and reduce stress

Water Parameters

Stable water quality supports long-term health and activity.

Ideal Water Conditions

Temperature

• 70°F – 82°F (21°C – 28°C)

pH

• 6.0 – 7.5

Water Hardness

• Soft to moderately hard

Filtration

• Moderate biological filtration

Maintenance

• Weekly water changes recommended

Feeding and Nutrition

Omnivorous Feeding Habits

Black Skirt Tetras readily accept a wide variety of aquarium foods.

Recommended Foods

Prepared Foods

• Tropical fish flakes
• Community fish pellets
• High-quality granules

Frozen Foods

• Bloodworms
• Brine shrimp
• Daphnia

Supplemental Foods

• Freeze-dried foods
• Small live foods
• Vegetable-based foods

A varied diet supports healthy growth, coloration, and overall vitality.

Why Choose a Black Skirt Tetra?

One of the Best Community Fish Available

The Black Skirt Tetra combines beauty, hardiness, and peaceful behavior in a single easy-to-care-for species.

Excellent Schooling Fish

Their active nature and schooling behavior create constant movement within the aquarium.

Beginner-Friendly Species

Their adaptability and resilience make them an ideal fish for new aquarium hobbyists.

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 excellent health, strong coloration, 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 Black Skirt Tetra

Compatible Community Fish

Black Skirt Tetras thrive with other peaceful tropical fish species.

Recommended Tank Mates

Schooling Fish

• Cardinal Tetras
• Diamond Tetras
• Lemon Tetras

Community Fish

• Harlequin Rasboras
• Honey Gouramis
• Rainbowfish

Bottom Dwellers

• Corydoras Catfish
• Bristlenose Plecos
• Kuhli Loaches

Avoid very slow-moving long-finned fish, as occasional fin-nipping may occur in undersized groups.

Frequently Asked Questions

How large does a Black Skirt Tetra grow?

Adult Gymnocorymbus ternetzi typically reach approximately 2 to 2.5 inches in length.

Are Black Skirt Tetras peaceful?

Yes. They are generally peaceful community fish, especially when kept in properly sized schools.

How many Black Skirt Tetras should be kept together?

A minimum group of 6 fish is recommended, although larger schools provide the best behavior and display.

What do Black Skirt Tetras eat?

They readily accept flakes, pellets, bloodworms, brine shrimp, daphnia, and other common aquarium foods.

Are Black Skirt Tetras suitable for beginners?

Absolutely. Their hardy nature and simple care requirements make them one of the best beginner-friendly tetra species available.