Koi (Cyprinus rubrofuscus)
Fish in the family Cyprinidae. Moderate care. Freshwater.
Quick facts
Scientific nameCyprinus rubrofuscus
FamilyCyprinidae
Also known asNishikigoi, Japanese Koi, Common Carp (ornamental)
Care levelModerate
Reef safetyFreshwater
TemperamentPeaceful
Dietomnivore
Adult size36 in
Minimum tank size1000 gallons
Water parametersTemp 59-77°F, pH 7.0-8.5, GH 5-20 dGH
Appearance
Large colorful ornamental carp with barbels; selectively bred into many color patterns (Kohaku, Sanke, Showa).
Difficulty and care for the Koi
Moderate
Origin and habitat
East Asia (domesticated)
Keeper notes
Peaceful but reaches pond scale; aquariums cannot house adults. Massive bioload requires pond-grade filtration.
Log Koi 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 Koi alongside everything else in your reef.
