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Common Goldfish
Carassius auratus
Family: Cyprinidae
📍 China (domesticated)
The common goldfish is one of the oldest domesticated fish, kept for over a thousand years. Hardy, cold-tolerant, and long-lived, it is best kept in ponds or large aquariums as it grows substantially. Single-tailed goldfish are active and fast.
Keeping this species
- diet
- Omnivore – goldfish flake/pellets, peas, bloodworms, vegetables
- lifespan
- 10–15+ years
- max size
- 30 cm (12 in) in ponds
- tank size
- 40 gallons for first fish + 10 per additional
- temperament
- Peaceful
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Tips from the community 💡
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Water it likes
- ph
- 6.5–7.5
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 5–19 dGH
- temperature
- 54–75°F (12–24°C)
Natural Habitat Temperature
46°F — 79°F seasonal range · (Jan low, Jul high)