Ranchu (Carassius auratus)
Fish in the family Cyprinidae. Moderate care. Freshwater.
Quick facts
Scientific nameCarassius auratus
FamilyCyprinidae
Also known asRanchu Goldfish, King of Goldfish, Japanese Lionhead
Care levelModerate
Reef safetyFreshwater
TemperamentPeaceful
DietOmnivore
Adult size8 in
Minimum tank size30 gallons
Water parametersTemp 65-72°F, pH 6.5-8, GH 5-19 dGH
Appearance
Dorsal-less goldfish with a strongly curved back, tucked-down tail, and a developed wen. Bred for top-down viewing in Japan.
Difficulty and care for the Ranchu
Moderate
Origin and habitat
Domesticated (Japan)
Keeper notes
Peaceful and very slow due to no dorsal fin; only mix with other dorsal-less or round slow fancies.
Log Ranchu in your reef tank
Reef Trak gives you the full record on every species in your tank: acquisition date, source, photos, parameters at time of stocking, and links to maintenance and feeding events. Track Ranchu alongside everything else in your reef.
