- Home
- 2025 Rocky Mountain Koi Show and Aquatic Expo
The 2025 35th Annual Rocky Mountain Koi Show and Aquatic Expo will be held on Labor Day Weekend at the Douglas County Fairgrounds - 500 Fairgrounds Rd, Castle Rock, CO 80104, in the Large Animal Barn (new building for 2025!)
General Information
What to expect - This is a FREE family friendly event, bring your kids, grandkids, friends, neighbors, and family. You'll see around 30, 500 gallon classic blue tanks with some of the most beautiful and highest quality koi that are not only from around Colorado but from other states as well. Some of the fish are worth many tens of thousands of dollars, so if you've never been to a koi show this is a unique opportunity.
Around the show you'll meet volunteers who are happy to tell you about the koi and we'll have educational materials (including actual koi teeth) for your educational pleasure.
We'll also likely have aquatic items, such as art, food, books, chemicals, pumps, filters, etc. for your pond and aquariums. This year we're expanding our footprint and are thrilled to welcome vendors who support the aquarium hobby for both freshwater and saltwater fish and reef keepers.
We some of our "wet" koi vendors come from across the country to make available some high quality koi from Japan. If you purchase one of those fish prior to 9am on Saturday, you can even enter it into our Koi Show to compete for awards.
We will have a silent auction, limited edition Koi Show Pins (hot collector's item!), and other goodies.
Entertainment - We're still putting together details for the entertainment this year but we'll absolutely have our koi mascot walking around, who will be happy to pose for pictures! Stay tuned for more details that will be posted here.
We will have some speakers talking about aquatic topics, some topics in years past have included koi health, food, and other interesting discussions.
On Sunday we will have a walk through with our official ZNA judges who will walk around to various tanks and talk about the fish and their thoughts and they performed their judging duties. Learn what they look for, what was good and not so good about various fish. Feel free to ask questions!
Food - We are looking to have a coffee cart available on Saturday morning, at least one food truck that will be around for lunch on Saturday and possibly beyond. We will have an opportunity for folks to welcome and meet our judges at our Judge's welcome dinner on Friday night, and we will have our Award Dinner on Saturday night, tickets are available now through our Club Store, details about food etc. to come.
Awards - For the last few years the Rocky Mountain Koi Show gained international attention for our incredible awards (which may or may not have caused grown men to act out their childhood fantasy of being king of the wrestling ring). This year we are again raising the bar and offering some incredible and unique Colorado inspired top awards. YOU DON'T WANT TO MISS OUT...become an exhibitor and enter your koi!
As in prior years, we will have an award dinner and ceremony on Saturday night after the show. Details are still pending so keep checking back but we're looking to raise the bar this year for the dinner! Tickets can be purchased in our Club Store, which will get you a wrist band that is required for entry.
Lodging - We have hotel room blocks at two local hotels this year. The Holiday Inn Express at 610 Genoa Way in Castle Rock CO and Best Western at 595 Genoa Way in Castle Rock CO. These discounts are good till the cutoff date of July 29th at 3pm Mountain or until there are no more rooms left in the discounted block. Here are the links:
Both hotels offer many amenities and are close to dining and the Castle Rock Outlet malls!
Schedule - Subject to Change
LOCATION
Douglas County Fair Grounds - Large Animal Barn
500 Fairground Drive
Castle Rock, Colorado
Take the Plum Creek exit, 181, off interstate 25.
Exhibitor Information
If you would like to be an exhibitor this year please:
1. Make your way over to our store and purchase one or more tanks to enter your fish! 2025 Exhibitor Tank
2. Download our Exhibitor Packet - RMKC Koi Show Exhibitor Package 2025.pdf
Vendor Information
If you would like to be a vendor at this year's event, GREAT NEWS! We're offering incredible discounts this year on spots. We're not sure we'll be this crazy next year, we're trying something, so take advantage while you can! Spots are only $125 for a 10'x10' space.
You can be a vendor in our space if you agree to the rules that are outlined in our Vendor Package. If you would like to be a food vendor you must comply with the Castle Rock ordinances and be registered with them. Please reach out to chrisgoumas@yahoo.com for more information to have your food truck or if you want to sell any food.
To become a vendor is easy. Download our Vendor Packet, read through it, fill out pages 9, 10, and 11, then send it to us.
Space is limited and only those who pay will have spots. We are limiting the number of out of state wet koi vendors to 4, again first come first serve so reserve NOW! Please note that prices increase significantly after July 1st.
RMKC Koi Show Vendor Package 2025.pdf
We would LOVE for you to sponsor multiple awards. Please head over to our Club Store