Quote:
Originally Posted by
CarolinaGirl
Bare minimum? koi need a bare minimum of 250 gallons each, with a minimum pond size of 1000 gallons. And that will allow them to only be for pet-grade fish, reaching maybe 24" max. It will probably never reach 40". but if you want to try, you need a minimum of 1000 gallons per koi and it has to be at least 6' deep, perferably 8' deep and at least 10,000 gallons. And it has to be female with the genetics to reach that size, which is unlikely. Also, you will have to get that fish a companion because koi will not do well alone.