Caring for your Discus
Discus
Symphysodon spp.
Basic Information:
Discus Fish are a highly sought-after freshwater species native to the slow-moving rivers and floodplains of the Amazon Basin, particularly in Brazil. Known for their round, disc-shaped bodies and vibrant coloration, discus are often considered one of the most beautiful aquarium fish. Adults typically reach 6–8 inches in diameter.
They are peaceful, social fish that do best in groups and prefer calm, stable environments. Discus are more sensitive than many other aquarium species, requiring consistent water quality and parameters. Due to their care requirements, they are generally recommended for intermediate to advanced aquarists.
Lifespan:
8–12 years in captivity with proper care.
Sexing:
Sexing is difficult and often only confirmed during breeding.
• Males and females appear very similar.
• Breeding behavior is the most reliable way to determine sex.
Enclosure:
• Minimum: 55-gallon aquarium for a small group.
• Recommended: 75-gallon or larger for optimal group size and stability.
Discus should be kept in groups of at least 5–6 individuals to reduce stress. Provide a calm environment with plants, driftwood, and open swimming space. Avoid overly aggressive tank mates.
Substrate:
Substrate choice depends on setup style:
• Bare-bottom tanks (common for breeding and ease of cleaning)
• Fine sand or planted substrates for display tanks
Both options can work if water quality is maintained.
Lighting & Temperature:
• Water Temperature: 82–86°F
• Heater: Required to maintain stable high temperatures
• Lighting: Moderate aquarium lighting with a 10–12 hour cycle
Consistently warm water is critical for discus health.
Water Parameters:
• pH: 5.5–7.0 (slightly acidic preferred)
• Ammonia: 0 ppm
• Nitrite: 0 ppm
• Nitrate: <20 ppm (ideally much lower)
Discus require extremely clean, stable water. Frequent water changes are essential.
Food:
Discus are omnivorous with a preference for protein-rich foods.
• High-quality discus pellets or flakes as a staple
• Frozen foods such as bloodworms and brine shrimp
• Specialized discus diets (including beef heart blends in some cases)
Feed small amounts multiple times per day for best results.
Water:
Maintain pristine water conditions with regular water changes (often 25–50% multiple times per week depending on stocking and feeding). Clean water is one of the most important factors in successful discus care.
Discus Fish are prized for their beauty, grace, and social behavior. For aquarists willing to maintain their strict water requirements, they offer a rewarding and stunning centerpiece for a freshwater aquarium.
Where Can I Buy Discus Fish Near Me?
If you're in Loudoun County, Virginia, it’s just a short drive to Critters, Reptiles & Exotics in Frederick, Maryland, where you can check availability of Discus Fish and get expert advice on tank setup, water parameters, and feeding. Whether you're building a show tank or advancing your aquarium skills, there’s always a new adventure waiting at Critters, Reptiles & Exotics!