Koi are our Passion

In 1984 climate scientist Jay Zwally traveled to Saporo Japan for a meeting of the Glaciological society …..Upon setting his bags down in the hotel room, he was struck by the beauty of the fish in a pond he could see outside his window. This was the moment he fell in love with Koi.

-awestruck still on return from visit and until next trip

-1990 with nishio, traveled to kyoto, soporo giving lectures, came home and bought 5 small koi and built small pond, started building big pond

-1995 met kodama started importing and relationship with kodama

-raising koi and traveling to japan for imports

Our Vision

We believe that nature and beauty have intrinsic value to the wellness and worth of an environment, and Koi exemplify this quality. With an average life expectancy of 15-30 years, Koi are beautiful and long-lived fish, living up to and past 100 years in optimal conditions. Given these two axioms, our vission at Zwally Koi is to

Whether your goal is to create a backyard oasis or simply bring life to a room, Koi are….

Our Koi

We travel to the breeders in the Niigata prefecture of Japan to hand select each of our High Quality Koi, and all the Koi we raise pass under the eye of Taro Kodama. In the future, we hope to set a new standard for the Lemon Hariwake by breeding our own from the greatest stock in Japan.

What We’ve Achieved This Year

Major Main Pond additions

  • 50,000 gallon Main Pond with 130+ stunning Koi, some of which are 28+ inches

  • Added two major air pumps, one in the shallows and one in the deep

  • Improved the flow rate of water flow through our biological filter to around 12000 gallons an hour by adding a new pump, and added 4 bubblers to the media container

  • Increased our already substantial biological filter media volume (a 10X6X8 chamber) by added 300 new biomedia ring structures.

  • Reconstructed the wall and rock structures of the shallow side

General Additions

  • Designed and built a 7000 gallon spawning pond on the hillside above the Main Pond

  • Designed and built a geothermal system for cooling in the hot summer months and extending the warm feeding season later into fall. This includes a large 10 feet deep reservoir to feed the system.

  • Dug the foundation, surveyed and designed an 8000 gallon show pond with 4 separate tanks to showcase a variety of stunning Koi

  • Designed and began construction of a main walkway through the Japanese gardens around the ponds, ending at the Japanese tea room