Back to species
Species profile

Comet Goldfish

Carassius auratus

Comet Goldfish (Carassius auratus) aquarium profile: minimum 75 gallon tank, 14 inch adult size, 60-72°F temperature range, and advanced care. Keep a group of at least 2.

FlashyAdvanced care
Comet Goldfish aquarium fish
75 galMinimum tank
14 inAdult size
2Schooling minimum
60-72°FTemperature

Water Range

pH
7-8.4
GH
8-20 dGH
KH
4-12 dKH

Behavior

Temperament
Peaceful
Fin nipping
0/5
Territory
0/5

Diet and Care

Diet
omnivore
Diet difficulty
1/5
Care difficulty
4/5

Planning Notes

Goldfish are high-waste cooler-water fish; they need strong filtration and should not be mixed into tropical community plans.

large adult sizehigh wastecooler waterpond or large tankhigh bioload
Check a tank plan

Use the checker before adding Comet Goldfish to compare tank size, cycle status, cover, and tankmates.

Open checker