Habitat: They inhabit the slow moving and stagnant rivers and lakes in Asia
Minimum Tank Size: 10 Gallon
Ideal Tank Conditions:
Temperature Range: 65-72°F
pH Range: 6.0-8.0
Hardness Range: 5-19
Temperament: Other goldfish and peaceful fish.
Breeding & Spawning: Oranda Goldfish are egg layers that spawn readily in the right conditions. They can be bred in groups as small as five individuals, but they are very social animals and likely to breed in larger groups as well. The only time Goldfish will spawn in the wild is when spring arrives. To spawn them in the aquarium, you will need to mimic the conditions found in nature.
Gender: During the breeding season, the male has white prickles, called breeding tubercles, on its gill covers and head. Seen from above, a female will have a fatter appearance when she is carrying eggs. It is impossible to sex Goldfish when they are young and not in breeding season, but generally the male is smaller and more slender than the female.