Glo Cosmic Blue (Gymnocorymbus ternetzi)

Discover the Brilliant Glo Cosmic Blue Tetra

The Glo Cosmic Blue (Gymnocorymbus ternetzi var.) is a stunning fluorescent color variety of the popular Black Skirt Tetra. Known for its vibrant electric blue coloration, peaceful nature, and active schooling behavior, this eye-catching fish has become a favorite among aquarium hobbyists looking to add bold color and movement to their freshwater aquariums. Glo Cosmic Blue Tetra Canada

The Cosmic Blue variety combines the hardiness and adaptability of the traditional Black Skirt Tetra with an intense fluorescent blue appearance that stands out beautifully under both standard aquarium lighting and blue-spectrum LED lighting. Whether featured in a planted aquarium, community fish tank, or modern aquascape, these fish provide a striking visual display that attracts attention from every angle.

Perfect for beginners and experienced aquarists alike, Glo Cosmic Blue Tetras are easy to care for, highly active, and compatible with a wide range of peaceful tropical fish species.

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

Glo Cosmic Blue Appearance

Brilliant Fluorescent Blue Coloration

The defining feature of the Cosmic Blue variety is its vivid fluorescent blue coloration that remains vibrant throughout its lifespan.

Classic Black Skirt Tetra Body Shape

This variety retains the distinctive deep-bodied profile and flowing fins characteristic of Gymnocorymbus ternetzi.

Active Schooling Behavior

When kept in groups, Cosmic Blue Tetras display synchronized schooling movements that create a lively and attractive aquarium display.

Exceptional Aquarium Display Fish

A school of Cosmic Blue Tetras adds constant motion, energy, and brilliant color to freshwater aquariums.

Glo Cosmic Blue Care Guide

Aquarium Setup

Cosmic Blue Tetras are hardy and adaptable fish suitable for a variety of aquarium environments.

Recommended Aquarium Requirements

Tank Size

• Minimum 20 gallons
• Larger aquariums recommended for larger schools

Aquarium Features

• Open swimming areas
• Live plants or aquarium décor
• Stable water conditions
• Moderate filtration

Schooling Requirements

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

Water Parameters

Stable water conditions support healthy growth and vibrant coloration.

Ideal Water Conditions

Temperature

• 72°F – 82°F (22°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

Cosmic Blue Tetras are easy to feed and readily accept a variety of aquarium foods.

Recommended Foods

Prepared Foods

• High-quality 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 strong coloration and overall health.

Why Choose Glo Cosmic Blue?

Stunning Electric Blue Color

Their brilliant blue coloration creates a dramatic visual effect that stands out in any aquarium.

Peaceful Community Fish

These tetras are compatible with a wide range of peaceful tropical fish and community species.

Beginner-Friendly Aquarium Fish

Their hardy nature and simple care requirements make them ideal for hobbyists of all experience levels.

Why Buy from Monster Aquarium Canada?

Premium Tropical Fish Selection

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

Healthy Active Specimens

We carefully select fish with vibrant coloration, strong health, 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 Glo Cosmic Blue

Compatible Community Fish

Cosmic Blue Tetras thrive in peaceful freshwater community aquariums.

Recommended Tank Mates

Schooling Fish

• Neon Tetras
• Cardinal Tetras
• Pristella Tetras

Community Fish

• Honey Gouramis
• Harlequin Rasboras
• Cherry Barbs

Bottom Dwellers

• Corydoras Catfish
• Kuhli Loaches
• Otocinclus

Avoid aggressive species and large predatory fish.

Frequently Asked Questions

How large does Glo Cosmic Blue grow?

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

Are Glo Cosmic Blue Tetras peaceful?

Yes. They are peaceful community fish that coexist well with other non-aggressive species.

How many Glo Cosmic Blue Tetras should be kept together?

A minimum school of 6 fish is recommended, though larger groups provide better coloration and more natural behavior.

What do Glo Cosmic Blue Tetras eat?

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

Are Glo Cosmic Blue suitable for beginners?

Yes. Their hardy nature and easy care requirements make them an excellent choice for beginner and experienced aquarists.