Koi care
Cyprinus rubrofuscus
Koi (Cyprinus rubrofuscus) grows to about 60 cm (23.6 in) and needs a tank of at least 4000 liters (1057 US gallons). Keep it at 4–25 °C (39–77 °F) with a pH of 7–8.6.
FreshwaterMediumPeacefulEats small fishEats plantsOutgrows aquariums
Adult size60 cm · 23.6 in
Smallest tank4000 L · 1057 gal
Temperature4–25 °C · 39–77 °F
pH7–8.6
GroupGroups of 3+
TemperamentPeaceful
SwimsEverywhere
DietOmnivore
Usually fine with
Avoid with
Neon tetraGuppyBetta (Siamese fighting fish)PlatyCardinal tetraBronze corydorasZebra danioHarlequin rasboraAngelfishMollyBristlenose plecoCherry barb
Track your tank with Guppi
Log water tests by tapping your kit’s colors, get water change reminders and check every tankmate before you buy.
Typical ranges from hobby references, checked by hand. Individual fish and local water vary.