Koi live an average of 50 to 70 years, but can live over 200 years. The oldest koi on record is Hanako, a scarlet koi that died in 1977 at the age of 226.
Koi are not hard to keep as long as they are kept in a pond or other similar body of water. They easily adapt to cooling temperatures, going into a period of dormancy during the winter when they require no food. Part of keeping koi is properly caring for their habitat.
Koi fish are symbols in both Japanese and Chinese culture and can represent traits of strength and of love. Their meaning varies depending on the color, scale type and the pattern of the individual fish.
Koi carp grow to an average size of 24 to 36 inches long. It is possible for some to reach lengths greater than 4 feet but only when pond conditions replicate their natural environment and they have plenty of space.
Pictures of diseases among koi are available for viewing on KoiCrisis.com and Koi Pond Guide, as of 2015. Both websites are dedicated to koi and koi health and feature full-color photos of various diseases and parasites that are seen in koi fish.
Koi can live in aquariums until they are six inches in length, or about two years old. The most important considerations in tanking koi are the number of fish in the space and water quality conditions.
The koi dragon is a mythological creature from ancient Chinese legend. It represents determination, perseverance and strength, and the koi dragon can also represent destiny fulfilled.