A marketplace built on trust, lineage, and craft
KOI Market was founded to bring the premium koi trade into the digital age — with the verifiability, transparency, and elegance the market deserves.
Making exceptional koi accessible to verified buyers worldwide
The global nishikigoi market is worth billions — yet most trade still happens through word of mouth, social media posts, and paper certificates of dubious origin. We built KOI Market to change that.
Our Digital Koi Passport system gives every fish a verifiable identity: bloodline, measurements, photos, health status, and ownership history — all in one place, accessible to every buyer.
Our AI valuation engine — trained on real market data — ensures both buyers and sellers negotiate from a position of knowledge, not guesswork.
Every fish has a Digital Passport. Every seller is verified. Every price is informed by data.
We reject the race to volume. We'd rather have 100 exceptional listings than 10,000 uncertain ones.
Breeders are the backbone of this market. Our tools are designed to amplify their reputation, not commoditise their craft.
Premium koi should reach premium buyers anywhere in the world. We handle the trust layer so breeders can focus on what they do best.
- Digital Koi Passports
- Verified breeder listings
- AI price suggestions
- Buyer–seller messaging
- Stripe-powered checkout
- Computer vision grading
- Bloodline lineage graphs
- Growth tracking over time
- Health certification badges
- Live auction platform
- Escrow & logistics integration
- Mobile app
- Breeder analytics dashboard
Create a free seller account and list your first fish in minutes.