Koi Care & Education Center
Koi Enterprise has spent three decades working with Nishikigoi, ornamental fish husbandry, water quality, filtration, pond systems, quarantine, Japanese koi selection, and long-term koi care.
The Koi Care & Education Center brings that experience together in one place. Whether you are purchasing your first koi, managing an established collection, designing a pond, improving filtration, preparing for a new fish, or learning how to evaluate Japanese koi, these resources are designed to help you make informed decisions.
Our approach combines practical experience, continued involvement with the Japanese koi industry, koi judging, diagnostic health management, pond and life-support system experience, and ongoing education.
The objective is straightforward: healthier koi, better ponds, better decisions, and a stronger understanding of Nishikigoi.
Explore Koi Enterprise Expertise
Japan Koi Buying & Breeder Relationships
Learn how Koi Enterprise approaches koi buying in Japan, evaluates Nishikigoi at breeder facilities, works with respected Japanese breeders, and uses customer requests to help guide koi selection.
Koi Quarantine, Biosecurity & Health Testing
Explore Koi Enterprise’s quarantine program, including breeder-specific isolation, temperature management and heat cycling, UC Davis diagnostic testing, and continuously evolving biosecurity procedures.
Koi Judging & Industry Experience
Learn how U.S. and Japan koi judging, Shinkokai involvement, breeder experience, continued education, and industry participation influence the way Koi Enterprise evaluates and selects Nishikigoi.
Koi Breeders
Explore information about Japanese koi breeders, their specialties, bloodlines, varieties, and the characteristics that distinguish their breeding programs.
Koi Varieties
Learn about Nishikigoi varieties, including their defining characteristics, patterns, color, conformation, and the qualities used when evaluating each variety.
Water Quality & Testing
Understand the water-quality parameters that affect koi health, including ammonia, nitrite, nitrate, pH, alkalinity, hardness, temperature, and proper testing practices.
Filtration & Pond Systems
Learn how mechanical, biological, and chemical filtration, circulation, aeration, pumps, plumbing, and proper system design work together to create a stable environment for koi.
Feeding & Seasonal Koi Care
Learn how water temperature, metabolism, oxygen levels, water quality, season, and fish condition should influence feeding and seasonal koi-care decisions.
Koi Enterprise Video Academy
Access practical video training covering koi care, pond systems, water quality, equipment, husbandry, and professional techniques from Koi Enterprise.