Building an outdoor oasis for koi, goldfish or other pond fish can be an exciting adventure. From waterfalls to feeding, having a fish pond can help bring serenity to your yard.
Koi are a Japanese "brocaded Carp" that can bring an array of color and activity to any pond or water garden.
The average koi can obtain sizes of 20- to 24-inches and weight 9- to 12-pounds.
Koi can average from $11 and go up into the millions.
This will depend on the size of your koi—for adult koi, the recommended size is 1,000 gallons and approximately three feet deep.