Discus

Symphysodon aequifasciatus

Discus (Symphysodon aequifasciatus) — Varies care, Peaceful, under Other. Minimum tank in the app: 65 US gal min; aim for 79–90°F and pH 6.5–7.5. Discus are captivating fish for enthusiasts who appreciate their dynamic presence and unique shapes.

Discus (Symphysodon aequifasciatus) in a planted freshwater aquarium
Care levelVaries
TemperamentPeaceful
Min tank size65 US gal min
pH range6.5–7.5
Temperature79–90°F
Max size7.9 in (20.0 cm)
Captive lifespan10–15 years
SchoolingNo

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

South America

  • South America

Regional colours match the stocking calculator’s origin map.

Discus Tank Setup

Create an expansive layout with ample swimming space complemented by strategic cover, such as driftwood or plants, to provide security. Maintain gentle water flow and use fine substrate, as Discus prefer soft, dark environments that mimic their natural habitats. Lighting should be soft to moderate, enhancing their colors without causing stress.

What Do Discus Eat?

Discus are omnivores with a moderate feeding speed, but competition can arise if tank mates are overly assertive. They benefit from a varied diet for optimal health and coloration, including high-quality pellets, frozen foods, and occasional live fare.

Discus Tank Mates

Ideal tank mates are similarly-sized, calm species that occupy different swimming levels, such as certain tetras or peaceful cichlids. Avoid aggressive or overly active fish that may stress or outcompete Discus during feeding. Intraspecies, they can be kept alone or in small groups, but larger groups can lead to pecking orders and stress if space is inadequate.

Are Discus Good for Beginners?

Care demand varies with setup and individual fish; use the numbers above as your baseline. Many aquarists underestimate the importance of water quality and tank size for Discus. Inadequate filtration and small tanks lead to stress and health problems.

Guides that pair with this fish

Browse species guides · Water parameters cheat sheet

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