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fullserviceaquatics.com/old-koi-need-spawn

Most koi will probably be about 1 year old by the time they even make it to market. Many fish can spend several months or even up to a year on the market before they find their “forever pond”. It can be difficult to know the true age of a fish, and it definitely cannot be based on date of sale !

www.quora.com/How-long-do-Koi-fish-live-on-average

Good question - on average has three "on average answers" Koi kept in ideal conditions on average can live into their 50s and sometimes 60s. In some cases much much longer than that maybe 90+ like parrots. Now lets talk on average for beginner...

koistory.com/blog/the-koi-lifespan-and-why-japanese-koi-live-longer

Genes. Japan is the home of the koi fish and as such the breeders there have had a chance to greatly enhance the gene pool. Even when koi were first introduced to countries outside of Japan the highest quality koi did not leave Japan, this means Japanese koi are dramatically better than "domestic koi" (Next Day Koi does a great job explaining the difference between Japanese and domestic ...

pondwiki.com/how-big-do-koi-get

How big do koi fish get in a 10 gallon tank? A 10 gallon fish tank measure 20″ x 10″ x 12″. Where 20″ is the length and 10″ is the width. The least dimension of your fish tank should be more than twice of your fish length. That means a koi fish can get up to 5 inches in a 10-gallon tank.

en.wikipedia.org/wiki/Koi

Koi (鯉, English: / ˈ k ɔɪ /, Japanese: ) or more specifically jinli or nishikigoi (錦鯉, [ɲiɕi̥kiꜜɡoi], literally "brocaded carp"), are colored varieties of the Amur carp (Cyprinus rubrofuscus) that are kept for decorative purposes in outdoor koi ponds or water gardens.. Koi is an informal group name of the colored variants of C. rubrofuscus. ...

pondinformer.com/how-long-do-koi-carp-live

In fact, koi are so durable that the longest living koi on record is a fish named Hanako, who died in 1977 at an astounding 226 years old. Hanako’s age was confirmed through analysis of her scales, which show age much like the rings on a tree do.

www.youtube.com/watch?v=7mHLeko8p0o

A pair of Taisho Sanke koi mating in the early morning of the first cool day after a hot spell. They usually spawn in the month of May or June. After three to four hours, you should remove the ...

www.koiacres.com/koi/faq.html

During the fall and spring, when the water temperature is between 52 and 60 degrees Fahrenheit, feed them an easy to digest wheat germ based Koi food. When the water is below 52 degrees, stop feeding your Koi. How big do Koi get? Most domestic Koi usually grow about 12 to 15 inches long. Japanese Koi usually grow 22 to 26 inches in long.

www.quora.com/How-big-do-koi-fish-grow-and-how-long-does-it-take

Most koi will achieve 24-26 inches. Koi can be stunted during the first 18 months of growth, but if it is from good stock they can later still grow to 20″. There are tosia and what some call jumbo tosai. A tosai is basically a first year koi. Fing...

answers.yahoo.com/question/index?qid=20100227052830AAuzX6d

How old can Koi fish grow and why do they have to be on the pond to grow huge. What filter would you recommend?! Answer Save. 4 Answers. Relevance. jogi. Lv 7. 1 decade ago. Favorite Answer - 55 gallons is not enough for even 1 koi fish. - The filter is too weak for the tank, goldfish need double filtration.