🐟TankstockerFreshwater Stocking & Compatibility

🐠 Common Goldfish Carassius auratus

Common Goldfish (Carassius auratus)

The Common Goldfish (Carassius auratus) is a easy-care, peaceful species from East Asia (domesticated). Adults reach roughly 12", so plan on a minimum tank of 40 gallons. Keep the water between 60–72°F with a pH of 6.5–8. This is a schooling fish — keep a group of at least 3 so it feels secure and colors up. As an omnivore, it does best on a varied diet appropriate to its feeding style.

At a glance

Adult size12"
Minimum tank40 gallons
Temperature60–72°F
pH6.5–8
TemperamentPeaceful
SchoolingYes — group of 3+
DietOmnivore
Care levelEasy
OriginEast Asia (domesticated)

Good tankmates for Common Goldfish

Avoid these tankmates

See the full tankmate guide for Common Goldfish →