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Fantail Goldfish

Fantail Goldfish

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The fantail goldfish is a popular fancy goldfish variety known for its double tail. It's different from the common goldfish because it has two top and bottom caudal fins, with the top fins fused along the top. Here's some information about caring for fantail goldfish:

  • Scientific Name: Carassius auratus
  • Adult Size: 7 inches
  • Life Expectancy: 10 to 15 years


  • Family: Cyprinidae
  • Origin: Asia
  • Social: Peaceful
  • Tank Level: Top, mid-dweller
  • Minimum Tank Size: 20 gallons
  • Diet: Omnivore
  • Breeding: Egg layer
  • Care: Easy
  • pH: 6.0 to 9.0
  • Hardness: 6 to 12 dGH
  • Temperature: 55 to 80°F (10 to 27°C)

Origin and Distribution: The fantail goldfish is a product of selective breeding in captivity and is not found in the wild. It originated from the Crucian Carp in Asia.

Colors and Markings: Fantail goldfish typically have short bodies, elongated pectoral and anal fins, and double tails. They come in various colors, often orange to white, but can be red or multicolored if crossed with other goldfish varieties.


  • It's okay to keep them alone, but they need a large, filtered aquarium.
  • Best tankmates are other fancy goldfish of similar swimming abilities.
  • Zebrafish can be added, as they prefer similar temperature conditions.

Habitat and Care:

  • Fantail goldfish are low-maintenance and easy-going.
  • They're not efficient swimmers, so provide an open area on the substrate for them to rest comfortably.
  • Avoid crowding their environment with too many decorations.

Diet and Feeding:

  • Choose pelleted diets with the right size for easy swallowing.
  • Fancy goldfish may need slightly higher protein levels due to swimming difficulties.
  • Feed once or twice a day depending on tank temperature.
  • Remove uneaten food to prevent waste accumulation.


  • Increase protein and fat in the diet before breeding.
  • Place one male and one female in a breeding tank with increased temperature and live plants.
  • Introduce springtime daylight conditions to encourage spawning.
  • After spawning, remove parents to prevent them from eating the eggs.
  • Feed powdered fry food to the babies after they become free-swimming.

Fantail goldfish are known for their distinctive appearance and make great additions to aquariums, especially if you provide them with the right care and environment.