How do koi fish grow?

You can put about ten small Koi in it, but as they grow you will need to find new homes for a few. How many gallons of pond water per Koi fish would you recommend? We recommend the following GPK (gallons per Koi) rates based on their size: Small Koi (2" - 8"): 100 - 150 gallons. read more

the keys to growing big koi #1 - Genetics Genetics are predetermined physical traits expressed as a phenotype. If a fish does not possess the bloodline to develop into a large specimen, it simply will not despite the keepers diligence. read more

How fast do Koi grow. Discussion in 'Fish & Koi Talk' started by tdwhite03, Aug 23, 2009. read more

Back to our favorite Koi. It appears that depending on their age and under optimum conditions Koi can grow over 2 centimeters (almost an inch) per month or faster, remember there are 2.54 cm in an inch. Check out the growth rates in the following graphs. Just click on the charts to expand them - then click on your browser's back arrow to return. read more