Pretty Bois — 2026 Omosako Shiro Utsuri Grow-Out Contest
Seven Shiro Utsuri with the looks dialed in. Pick a style. Raise your fish. Get judged.
The Pretty Bois are the front-of-the-line crowd — the Omosako Nisai that already carry the body, balance, and sumi placement that makes Shiro Utsuri pop. These are the fish you'd point to at the pond and say that's the one. They're not finished — nothing is at Nisai — but they're already showing the structure that wins.
You're buying into a group of 7 hand-selected Shiro Utsuri from Omosako Koi Farm in Kure, Hiroshima. After purchase, you'll be randomly assigned one of the 7 koi in this category. We do the assignment after sales close so nobody can cherry-pick — every buyer gets a fair shot at every fish in the group.
What you'll receive
- One Nisai (2-year-old) Shiro Utsuri, approximately 47–52 cm
- Free overnight shipping to your door via Southwest Cargo (continental US)
- Entry into the 2026 Omosako Grow-Out Contest — judged by the Omosako family themselves
- Eligibility for the Best of Pretty Bois prize — your choice of 15kg or 20kg JPD koi food (floating or sinking)
- Eligibility for Grand Champion — JPD food plus a JPD automatic feeder (retails over $1,000)
- A year of bragging rights, watching your fish develop, and being part of a tight community of growers
What you'll do
This isn't just a koi purchase. It's a year-long project.
- Receive your koi in late June 2026 and acclimate to your pond
- Grow it out — feed it, watch it develop, photograph the journey
- Submit final photos & a short video by July 24, 2027
- Find out if you won — Omosako family judging, winners announced August 6, 2027
What makes a Pretty Boi
Shiro Utsuri judging at a high level is about three things: body shape, sumi pattern, and skin quality. The Pretty Bois category is built around fish that already have those fundamentals locked in. Strong shoulders. Clean skin. Sumi that's already finding the right places to land — not just blotched on, but distributed with intent.
What you're growing is depth and refinement. The body will fill out. The sumi will deepen and stabilize. The white will brighten. The koi you pick up in June will be a more polished version of itself by July of next year.
Why Omosako
Omosako Koi Farm has been producing premium Shiro Utsuri since 1949 — three generations of breeders refining a single signature variety. Shawn (Mystic Koi & Water Gardens) has personally selected these fish from Omosako's Kure ponds. The lineage is documented and the relationship is decades deep.
Shipping & arrival
- Free overnight Southwest Cargo shipping, continental US
- We coordinate the delivery date with you after sales close (week of June 27, 2026)
- IATA-certified live animal packing
- Live arrival guarantee — see FAQ below for full terms
Choose options
Need help?
Frequently Asked Questions
Order
After sales close on June 26, 2026, we randomly assign one of the 8 koi from this category to each buyer. The assignment is recorded, photographed, and emailed to you before shipping. No cherry-picking — every buyer has equal odds at every fish.
Yes. If your koi arrives dead, contact us within several hours with photos and we'll refund or replace at our discretion. After acclimation, the fish is your responsibility.
Absolutely. We're at 1250 W Arrow Hwy in Upland, CA — open Tuesday through Sunday. Call ahead and we'll have your koi assignment ready to view. as well as in store pick up!
Yes — the fish is yours forever, contest or no contest. Many growers continue showing their contest koi at later events.
The Omosako family reviews every submitted photo set and video. They judge based on body conformation, sumi development, hi quality (for Tancho), skin quality, and overall presence. Their decision is final.
Yes, to the continental US. Hawaii, Alaska, and international buyers, please contact us before purchasing for a shipping quote.
Yes — but each koi is a separate contest entry. You can buy up to all 8 if you want them all (and want to compete against yourself).

