Source: Wikimedia Commons
Discus
AdvancedSymphysodon 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.
Difficulty
Advanced
Temperature
28〜32℃
Lifespan
8-15 years
Size
15-20cm
Diet
Omnivore (discus hamburger, bloodworms, granules)
About
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)
Basic Info
Origin
the Amazon river basin in Brazil
Lifespan
8-15 years
Size
15-20cm
Temperature
28〜32℃
Diet
Omnivore (discus hamburger, bloodworms, granules)
Care Guide
Tank Size
60cm+ (group of 5+ recommended)
Water
pH 5.5-6.5, GH 1-4. RO water ideal
Water Changes
Frequent changes (daily to every 2 days) are key to health
Notes
Sensitive to parameter swings. Watch for Aeromonas and darkened coloration
AdvancedLargeDemanding waterMany strains
Discus FAQ
QHow difficult is it to keep Discus?
A
Advanced. This is an advanced-level species. It requires specialized equipment and advanced husbandry skills with precise environmental control.
QWhat is the ideal temperature for Discus?
A
The ideal temperature for Discus is 28〜32℃. Avoid sudden temperature changes and maintain a stable environment.
QWhat is the lifespan of Discus?
A
The average lifespan of Discus is 8-15 years. With proper care and nutrition, they can live a long and healthy life.
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