Fancy goldfish
Carassius auratus
Photo: Kateryna Martyniuk · CC BY 4.0
- Adult size
- 18 cm7 in
- Start with
- 1
- Tank length
- 90 cm35 in
- Lifespan
- 10–20 yrs
- Temperature
- 19–23 °C66–73 °F
- pH
- 6.5–7.5
- Hardness
- 5–15 dGH
- Diet
- herbivore
Rounded varieties need open turning space and careful feeding.Rounded varieties need open turning space and careful feeding.
Tank sizes
Good tankmates
Avoid with
Neon tetraCheck Fancy goldfish with Neon tetraCheck Fancy goldfish with Neon tetra
BettaCheck Betta with Fancy goldfishCheck Betta with Fancy goldfish
Cardinal tetraCheck Fancy goldfish with Cardinal tetraCheck Fancy goldfish with Cardinal tetra
- Acei cichlid
No shared pH rangeNo shared pH range
- Ajamaru rainbowfish
No shared temperature rangeNo shared temperature range
- American flagfish
American flagfish may nip Fancy goldfishAmerican flagfish may nip Fancy goldfish
- Angfa rainbowfish
No shared temperature rangeNo shared temperature range
- Arfak rainbowfish
No shared temperature rangeNo shared temperature range
- Batanta rainbowfish
No shared temperature rangeNo shared temperature range
- Black kuhli loach
No shared temperature rangeNo shared temperature range
Black neon tetraNo shared temperature rangeNo shared temperature range
- Blind cave tetra
Blind cave tetra may nip Fancy goldfishBlind cave tetra may nip Fancy goldfish
Sources
| temperature | 19–23 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low |
|---|---|---|
| ph | 6.5–7.5 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium |
| gh | 5–15 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low |
| origin | East Asia; captive varieties | curated-v0 (needs expert review) · medium |
| notes | Rounded varieties need open turning space and careful feeding. | curated-v0 (needs expert review) · medium |
| beginner friendly | false | curated-v0 (needs expert review) · medium |
| care level | advanced | curated-v0 (needs expert review) · medium |
| color palette | #ED8C30 | curated-v0 (needs expert review) · low |
| activity | moderate | curated-v0 (needs expert review) · medium |
| swim zone | middle | curated-v0 (needs expert review) · medium |
| temperament | peaceful | curated-v0 (needs expert review) · medium |
| fin nipper | false | curated-v0 (needs expert review) · medium |
| long finned | true | curated-v0 (needs expert review) · medium |
| territorial | false | curated-v0 (needs expert review) · medium |
| schooling | false | curated-v0 (needs expert review) · medium |
| schooling min | 1 | curated-v0 (needs expert review) · medium |
| diet | herbivore | curated-v0 (needs expert review) · medium |
| lifespan years | 10–20 | curated-v0 (needs expert review) · low |
| growth to adult months | 24 | curated-v0 (needs expert review) · low |
| length weight | {"a":0.012,"b":3} | curated-v0 (needs expert review) · low |
| planted safe | false | curated-v0 (needs expert review) · medium |
| min tank length | 90 | curated-v0 (needs expert review) · medium |
| body shape | goldfish | curated-v0 (needs expert review) · medium |
| variety | fancy | curated-v0 (needs expert review) · medium |