CheckMyFishTankRanchu Goldfish care
Carassius auratus · Freshwater · Advanced level care
A prized fancy goldfish with a rounded back and head growth.
Feeding
Twice a day. Only what they finish in about 2 minutes, since goldfish always beg for more. Goldfish pellets, blanched vegetables, occasional protein.
Has long fins that fin nippers target.
Good tank mates
Fish that pass every check with Ranchu Goldfish in a 60 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.
Do not mix with
- Pearl Gourami: Pearl Gourami and Ranchu Goldfish need different water temperatures.
- Moonlight Gourami: Moonlight Gourami and Ranchu Goldfish need different water temperatures.
- German Blue Ram: German Blue Ram and Ranchu Goldfish need different water temperatures.
- Discus: Discus and Ranchu Goldfish need different water temperatures.
- Convict Cichlid: Convict Cichlid is aggressive and will bully peaceful Ranchu Goldfish.
- Jack Dempsey: Jack Dempsey is aggressive and will bully peaceful Ranchu Goldfish.
- Green Terror: Green Terror is aggressive and will bully peaceful Ranchu Goldfish.
- Red Zebra Cichlid: Red Zebra Cichlid is aggressive and will bully peaceful Ranchu Goldfish.
Questions
What size tank does a Ranchu Goldfish need?
At least 30 gallons. Adults grow to about 7 inches, so plan for the adult size, not the size at the store.
What temperature does a Ranchu Goldfish like?
65 to 76 degrees Fahrenheit, with a pH of about 6.5 to 8. A steady temperature matters more than hitting one exact number.
How many Ranchu Goldfish should I keep together?
One is fine, and they can also live in small groups if the tank is big enough.
What do Ranchu Goldfish eat?
Goldfish pellets, blanched vegetables, occasional protein. Feed twice a day: only what they finish in about 2 minutes, since goldfish always beg for more.
Sources
Checked against these sources on 2026-11-10. When sources disagree we use the safer number.