Species Profile
Fantail Goldfish
Carassius auratus var. fantail
GoldfishpeacefulLong-finned
Adult size
8″
Minimum tank
30 gal
Temperature
65–75°F
pH
6.5–8
Schooling
Solitary OK
Water level
mid
Grows from juvenile
Typically sold at ~1.5″ and reaches 8″ over ~2 years. Plan tank size for the adult, not the fish at purchase.Diet
Sinking pellets, blanched veggies, frozen
Notes
The starter fancy goldfish — hardiest of the fancies. Twin tail fin. Better tolerates beginner mistakes than oranda or ranchu.
Photo: ProjectManhattan / Wikimedia Commons · Source · CC-BY-SA-3.0