Koi fish have a typical life span ranging from 50 to 70 years. There are authenticated cases, however, in which koi have lived over 200 years.
While most koi do not reach the exceedingly long life span sometimes attributed to the species, the oldest koi fish lived to be 226 years old. This fish, named Hanako, died on July 7, 1977, according to Mother Nature Network. Koi typically grow to reach 2 to 3 feet long and weigh approximately 35 pounds. They are a species of common carp fish bred through the centuries by Japanese rice farmers to have the color variations they are known for today.Learn More
The exact lifespan of a tropical fish varies greatly depending upon the species. In general, larger fish have longer lifespans than smaller fish, and fish that give birth to live young tend to live shorter lives than those that lay eggs.Full Answer >
Adequate koi food contains 32 to 36 percent protein from fish by-products as its first ingredient. Its second ingredient is plant matter, from sources like wheat germ, that gives an energy boost. Koi food should also contain 3 to 10 percent crude fat, ascorbic acid, immune boosters and color enhancers.Full Answer >
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.Full Answer >
Koi fish are really a type of carp. The term "mongrel koi" refers to koi fish which have somehow become inbred with other types of fish. Koi fish are popular for their colors and sleek appearance in fish ponds.Full Answer >