Comet Goldfish

Carassius auratus

A slender, fast single-tailed goldfish with a long flowing tail.

Water

Freshwater

Temperature

65–75°F

pH

6.5–8

Hardness

5–20 dGH

Max size

8 in

Min tank

30 gal

Temperament

Peaceful

Social

Social (2+)

Swim level

All

Diet

Omnivore

Care level

Beginner

Lifespan

10-15 years

Breeding

Egg-scatterer

Suitability

Common

Origin

Cultivated (East Asia origin)

An athletic, hardy goldfish that grows large and swims fast, making it ideal for ponds and big tanks. It will outcompete and outpace slow fancy goldfish, so house it with other single-tails. Needs lots of space and strong filtration.