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Symphysodon spp.
The 'King of Tropical Fish.' A disc-shaped cichlid with delicate coloration and graceful movement. Demands strict water quality — warm, soft, slightly acidic water. Many captive-bred strains.
The discus (Symphysodon spp.) is a large cichlid native to the Amazon River basin in Brazil, widely regarded as the 'King of Tropical Fish.' Its disc-shaped, laterally compressed body — reaching 15–20 cm in diameter — combined with spectacular coloration ranging across reds, blues, browns, and greens with intricate striped patterns, makes it one of the most visually impressive freshwater fish. Discus demand exceptional water quality: very soft, acidic water (pH 5.5–6.5, GH 1–4) closely resembling the blackwater streams of the Amazon, with RO water often recommended. Water temperature should be maintained at 28–30°C, making them suitable tankmates for heat-tolerant species such as Corydoras sterbai. They are social fish that benefit from being kept in groups of five or more. Diet consists primarily of high-protein discus hamburger or premium pellets. During breeding, pairs establish territories and care devotedly for eggs and fry; newly hatched fry feed on a mucus secreted from the parents' skin — a remarkable and rare behavior in freshwater fish.
Source: Wikipedia (CC BY-SA 4.0)
Origin
the Amazon river basin in Brazil
Lifespan
8-15 years
Size
15-20cm
Temperature
28〜32℃
Omnivore (discus hamburger, bloodworms, granules)
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Primary sources
「ディスカス」は属レベルの総称。代表種 Symphysodon aequifasciatus で確認。属内に CITES 掲載種なし。
Sources: FishBase / Seriously Fish / CITES Appendices (Checklist)
Regulations may change. Always verify the latest information with the relevant authorities.
Find listings for this species
60cm+ (group of 5+ recommended)
pH 5.5-6.5, GH 1-4. RO water ideal
Frequent changes (daily to every 2 days) are key to health
Sensitive to parameter swings. Watch for Aeromonas and darkened coloration
Advanced. This is an advanced-level species. It requires specialized equipment and advanced husbandry skills with precise environmental control.
The ideal temperature for Discus is 28〜32℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Discus is 8-15 years. With proper care and nutrition, they can live a long and healthy life.
Discus typically reaches 15-20cm as an adult. Size may vary depending on care conditions and individual genetics.
Discus feeds on: Omnivore (discus hamburger, bloodworms, granules). Aim for a balanced diet with appropriate feeding frequency.
The price of Discus varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: June 23, 2026