Upcoming events.
Bid In The Bowl Auction. Part Three.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
Bid In The Bowl Auction. Part Four.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
2025-2026 COTSKoi Growout Competition
Welcome to the 2025-2026 Children of the Sun Koi Growout Competition—where unmatched quality meets exceptional value, complemented by our inclusive Azukari service. This exclusive event presents an extraordinary opportunity to acquire premium Nisai Koi, sourced from renowned breeders such as Dainichi Koi Farm, Isa Koi Farm, Torazo Koi Farm, Ikarashi Toshinobu Koi Farm, Marudo Koi Farm, and the exciting newcomer Marushin Koi Farm.
Each fish offered ranges between 35cm and 50cm at the competition’s outset on November 7th, 2025. With prices thoughtfully set between $1,500 and $2,500, participants benefit not only from superior bloodlines and meticulous selection but also from our Azukari plan—valued at $100 per month—which ensures expert care throughout the full six-month growout period concluding on June 6th, 2026.
Join fellow koi enthusiasts and breeders alike in this refined pursuit of growth and excellence, where your favorite Koi have the chance to truly flourish. Choose one of these Japanese Koi of undeniable quality and witness remarkable transformation under professional care. The goal is growth—both in size and prestige. We invite you to be part of this distinguished experience.
Niigata Koi Breeders Auction. Part Two.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
Niigata Koi Breeders Auction. Part Three.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
Koi Harvest Auction. Part Three.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
The Nenmatsu Koi Auction. (Year Finale)
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
Koi Harvest Auction. Part Two.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
Bid In The Bowl Koi Auction. Part Two.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
Bid In The Bowl Koi Auction. Part One.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
Niigata Koi Breeders Auction. Part One.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
Koi Harvest Auction. Part One.
The upcoming online auction at cotskoiauction.com will feature high-quality Koi directly from Japan. This event lets collectors easily buy authentic Japanese Koi from home. Enjoy a smooth, elegant bidding experience and bring top-tier Koi to your pond with Children of the Sun Koi.
High Quality Koi Auction
Take part in our High Quality Koi Auction! This auction features 30 Koi hand selected by the masters. The auction will be held online at cotskoiauction.com. It will end on Sunday September 7th, 2025 at 5pm PST.
This auction features benefits such as High Quality Koi at a great value, one-month boarding for free to accomodate your needs for getting your QT setup or ship your Koi and you may also receive FREE SHIPPING with any purchase made on cotskoi.com in conjunction with cotskoiauction.com.
Koshiji - Ozumi Niigata Koi Breeders Auction (Online)
Welcome to the Koshiji Koi Farm / Ozumi Ikarashi Koi Farm Auction!
This exclusive Koi auction is featuring two breeders based in Niigata, Japan.
Koshiji Koi Farm and Ozumi Ikarashi Koi Farm are based in Niigata prefecture. These farms in particular are very close in vicinity and have some of the most unique breeds of Koi. Please visit our online auction to participate in the event.
Enjoy this authentic Koi auction sourced directly from Japan.
High Quality Koi Auction
Cotskoi Auction presents an exquisite selection of high-quality Japanese Koi that epitomizes elegance and beauty. Each specimen is meticulously curated, showcasing vibrant colors and stunning patterns that reflect the artistry of traditional koi breeding. Our auctions offer a rare opportunity for enthusiasts to acquire authentic koi from renowned breeders, ensuring both quality and pedigree. As a connoisseur of these exceptional aquatic jewels, you will appreciate the opportunity to engage in a compelling bidding experience, surrounded by a community that shares your passion for these magnificent creatures.
Please view and bid at www.cotskoiauction.com THE AUCTION WILL END 6.1.25 AT 5PM PST
Koi and Coffee
Wake up Saturday to a peaceful setting with water sounds and colorful Koi. Enjoy freshly brewed coffee while connecting with fellow enthusiasts to share experiences and talk about pond design and filtration tips. Work together to improve knowledge and create a supportive community. Get personalized advice for beginners and experienced keepers to enhance Koi care and management, ensuring a healthy ecosystem. Experience the combination of Coffee and Koi—where passion joins expertise.
Koi and Coffee
Wake up Saturday to a peaceful setting with water sounds and colorful Koi. Enjoy freshly brewed coffee while connecting with fellow enthusiasts to share experiences and talk about pond design and filtration tips. Work together to improve knowledge and create a supportive community. Get personalized advice for beginners and experienced keepers to enhance Koi care and management, ensuring a healthy ecosystem. Experience the combination of Coffee and Koi—where passion joins expertise.