Tosakin (Carassius auratus)
Fish in the family Cyprinidae. Hard care. Freshwater.
Quick facts
Scientific nameCarassius auratus
FamilyCyprinidae
Also known asTosakin Goldfish, Curly Fantail, Peacock-tail Goldfish
Care levelHard
Reef safetyFreshwater
TemperamentPeaceful
DietOmnivore
Adult size6 in
Minimum tank size20 gallons
Water parametersTemp 65-72°F, pH 6.5-8, GH 5-19 dGH
Appearance
Rare Japanese fancy with a single, undivided flat tail whose lobes curl back on themselves, displayed best from above in a shallow round bowl.
Difficulty and care for the Tosakin
Hard
Origin and habitat
Domesticated (Japan, Kochi)
Keeper notes
Peaceful and weak-swimming; the spreading tail makes it slow, so keep only with other tosakin or in a species setup.
Log Tosakin 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 Tosakin alongside everything else in your reef.
