Quick Care Facts

Water Type
Freshwater
Minimum Tank Size
30 gallons for a single fancy goldfish, with 20 gallons per additional fish
Care Level
Easy
Temperament
Peaceful
Temperature Range
65 to 72 degrees Fahrenheit (18 to 22 degrees Celsius)
pH Range
7.0 to 8.0
Adult Size
6 to 12 inches (15 to 30 cm) depending on variety
Diet
Omnivorous; requires high-fiber pellets, flakes, and fresh vegetables.

Overview & Characteristics

A hardy coldwater fish native to East Asia, known for numerous fancy varieties and long lifespans.

Behavior & Schooling: Social fish that prefer the company of other goldfish, though not strictly schooling.

Water Parameters & Environment

Stable water parameters are critical for long-term health. Avoid rapid fluctuations in temperature and pH when performing routine water changes.

  • Temperature: 65 to 72 degrees Fahrenheit (18 to 22 degrees Celsius)
  • pH Range: 7.0 to 8.0
  • Water Type: Freshwater
  • Minimum Volume: 30 gallons for a single fancy goldfish, with 20 gallons per additional fish

Diet & Tank Mates

Dietary Needs: Omnivorous; requires high-fiber pellets, flakes, and fresh vegetables.

Compatibility: Best kept with other goldfish; can outcompete or nip slow tank mates.

Temperament: Peaceful.

Health & Sensitivities

Prone to swim bladder disorders, fin rot, and ich due to heavy waste production.

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Editorial methodology

Aqua AI species profiles are compiled from canonical database records, taxonomy standards, and verified captive husbandry guidelines. Captive water ranges represent general baseline parameters; always observe livestock behavior and perform regular water tests.