Fishby LogoFishby

Discus Aquarium Care Guide

Symphysodon spp.

Got a photo? Identify fish instantly with the Fishby app.

Open the app

Keeping Discus in an aquarium requires the right conditions.

Aquarium Information

  • Care level: advanced
  • Temperament: peaceful
  • Diet: omnivore
  • Minimum tank size: 75 gallons (280 liters) for a group of 5-6 adults
  • Compatibility: Best kept in species-specific tanks or with other peaceful, soft, acidic water loving fish such as cardinal tetras, rummy-nose tetras, and dwarf cichlids. Avoid aggressive or fin-nipping species.
  • Special requirements: Discus require pristine water quality, stable parameters, and a well-established, mature aquarium. They thrive in planted tanks with driftwood and subdued lighting, mimicking their natural blackwater habitats. Daily water changes (25-50%) are often necessary. They are schooling fish and should be kept in groups of at least 5-6 individuals to reduce stress and encourage natural behavior.

Water parameters

Temperature
27-31°C (80-88°F)
pH level
5.5-7.0 (ideally 6.0-6.5)
Hardness
1-4 dGH (soft to very soft water)

Explore Discus

Identify fish anywhere

Free on iOS, Android, and Web. Photo identification, full species details, and more.

Open in app