Aqualocks
- Manufactures and sells a snap-together honeycomb structure that rests six inches or more below the surface of the pond to protect its contents from raccoons, herons and other predators.
- http://www.aqualocks.com

Deep Creek Koi Farm, Inc.
- A small, specialty grower/breeder who concentrates on unusual and unique fish and color patterns.
- http://deepcreekkoifarm.com/

Nishikigoi Farm Matsuda
- Japanese koi farm breeding Nishikigoi exclusively selected from Tosai 30,000 and 10,000 2-year old fish. Includes photos, list of breed varieties, and shipping information.
- http://www.koikoi-japan.com

Mitchkoi
- Offers koi and pond maintenance equipment. Includes photos and company profile.
- http://www.mitchkoi.com

All About Koi
- Offers products, equipment, and informational articles.
- http://www.allaboutkoi.co.uk

Blackburn House Koi
- Specializes in the supply of Japanese koi and koi food, pond equipment, and accessories.
- http://www.blackburnhouse-japanese-koi.co.uk/

Japanese Koi Pond Warehouse
- Offers koi, as well as, pond construction and maintenance supplies.
- http://www.jkpw.co.uk/

Eds House of Koi
- Offers koi and goldfish wholesale information, retail and pond supplies. Includes photos, pricing, and company profile.
- http://www.edshouseofkoi.com

Wakin Works
- Offering Japanese Wakin goldfish, both imported and domestic.
- http://earthbourne.hypermart.net

Causeway Koi UK
- Offering a range of Koi fish, food, pond equipment and accessories. Ships to UK and Ireland.
- http://www.causewaykoi.com/

The Koi Supply
- Food and supplies for Koi.
- http://www.thekoisupply.com

Koi Village
- Water garden shop providing ponding products and koi.
- http://www.koivillage.com

Koi Water Garden Ltd
- Specialises in importing Japanese Koi carp, offers information on Koi stocks, water testing, foods and health products.
- http://www.koicarp.org.uk

Fancy Koi Outlet
- Japanese Koi and pond supplies, contains information on fish, water pumps, medication, bacteria, filters, food, water test kits, liners and books.
- http://www.fancykoioutlet.com

Koi And Pond Supplies From Dai Suki
- Offers a gallery, Koi foods and medication, pond medication and water treatments.
- http://www.daisuki.co.uk

Brett's Fish Farm
- Specializing in Japanese koi. Includes breeding information.
- http://www.brettsfishfarm.com

Blackwater Creek Fish Farm
- Offers imported Koi, domestic Koi, small fish and pond rental.
- http://koisale.com

Werner's Waters
- Offers advise and resources on Koi, ponds, water gardens, pumps, filters and accessories.
- http://wernersponds.com

Koi And Pond Supplies
- Offers pumps, heat exchangers, UV's, fish medicines, fish food, water treatments and pond liners.
- http://www.koistuff.com

Koi By Keirin
- Offers imported Japanese Koi, information on Koi types with photographs and Koi of the month. Also contains filtration, heater and pond supplies.
- http://www.keirinponds.com/

Thompson Aquatic Gardens
- Offers Koi for sale with Japanese Koi prices and domestic Koi prices.
- http://www.thompsonaquaticgardens.com

PoKoi.com
- Offers Koi food, filters, UV sterilizers, water and air pumps, PVC valves, testing kits and a Koi gallery.
- http://www.pokoi.com

Yume Nishikigoi
- Supplies Japanese Koi (Nishikigoi) from breeders who are listed. Provides information on ponds and water hardness.
- http://www.yumekoi.com

Pan Intercorp
- Importers of Koi from Japan. Offers reference materials, filter systems, health, nutrition, shows and events.
- http://www.koi.com

Quality Koi Company Inc.
- Japanese breeders in all sizes and varieties. Also, products and equipment for related ponds.
- http://www.qualitykoi.com/

White Water Filters
- Offers a Koi accessory called LymnoZyme to prevent disease. Provides pond design, installation and pond supplies.
- http://www.whitewaterfilters.com

Dragon Koi
- Offers Koi sales, contains information on aquatic plants, design and installation and a visit to other ponder's places.
- http://www.dragonkoi.com