Discus: King of the Aquarium, Demanding Yet Fascinating

The discus (Symphysodon spp.) is undoubtedly one of the most admired freshwater aquarium fish. Its elegant shape, vibrant colors, and social behavior make it a true jewel for any passionate aquarist. However, keeping discus requires special attention and consistent commitment.

An Aquarium Adapted to Its Needs

Tank Size and Group:

A minimum aquarium volume of 350 liters is essential to house a group of 5 adult discus. These fish need space to swim and establish their hierarchy.

It is crucial to keep discus in groups, as they are social fish that thrive in the presence of their own kind.

Tank Mates:

Discus can coexist peacefully with certain species, provided you choose calm fish that share similar water parameters.

Examples:

• Loricariids: Corydoras, Ancistrus
• Characins: Tetras (cardinal tetras, rummy nose), hatchetfish

Water Parameters:

Water quality is essential for the health of discus.

Ideal parameters:

• pH: 6 to 7.5
• Temperature: 28°C (stable)

Filtration:

Filtration flow should be at least 5 times the tank volume per hour.

The filtration system must be powerful and efficient to maintain crystal-clear, pollutant-free water.

Strict Weekly Maintenance

Water Changes:

A weekly water change of at least 25% of the aquarium volume is essential.

This helps renew the water, remove nitrates, and maintain optimal water quality.

Substrate and Glass Cleaning:

Regular cleaning of the substrate and glass is necessary to remove organic waste and algae.

Parameter Monitoring:

It is essential to regularly check water parameters (pH, temperature, nitrates, nitrites) using reliable test kits.

Varied and High-Quality Feeding

Variety:

Discus are omnivorous fish that require a varied diet for healthy growth and vibrant coloration.

Offer:

• Live or frozen foods (enchytrae, brine shrimp, daphnia)
• High-quality pellets and flakes specifically designed for discus
• Homemade mixes

Feeding Frequency:

Feed your discus several times a day in small quantities to avoid overfeeding and water pollution.

Additional Tips

Plants:

Choose hardy plants suited to high temperatures, such as Anubias and Cryptocoryne.

Lighting:

Moderate lighting is sufficient for discus.

Aquascaping:

Decorate the aquarium with driftwood, rocks, and hiding spots to provide shelter areas.

Observation:

Carefully observe your discus to detect any signs of disease or stress.

By following these guidelines, you will maximize your chances of keeping your discus healthy and enjoying their exceptional beauty.