Winter and Cold Water Effects on Koi

This article is written by Rosimeri Tran, KHA, to discuss the effects of winter and cold pond water temperature on koi fish and how the koi are affected by vast water temperature changes. I can’t emphasize enough, even if you stopped or greatly reduced feeding your koi during the winter with colder water temperatures, you …

Fresno Koi Show tanks with cover

2026 Fresno Koi Show Announced!

The Central California Koi Society (CCKS) will host its 46th annual Fresno Koi Show on Saturday-Sunday, September 26-27, 2026, in partnership with the Shinzen Friendship Garden!  Set-up and koi entry day is Friday, September 25, 2026.  More details for the 2026 Fresno Koi Show details are coming soon! Visit the Fresno Koi Show webpage for more details.

Fall Koi Pond Care Tips

The cooler fall weather of the Central Valley is here! The colder nighttime temperatures this time of year are likely reducing your water temperature. The koi in the pond are likely noticing the weather change, as well. Below are some Fall pond care suggestions to help guide you and your koi pond friends into the …

Quarantine Your New Koi

The purchase of a new koi is an investment in expanding your koi hobby. Adding the new arrival to your pond is super exciting, as you want to see the new koi swimming with the rest of your koi. But introducing this new koi to your pond without proper precautions could brew trouble. First, this …

Comparing Sinking Vs. Floating Koi Food

By: Rosimeri Tran There are many options when it comes to koi food based on size, season, nutritional value, color enhancement, cost, etc. Koi keepers can choose the type of koi food that meets their preferences and goals. Here is a comparison of sinking versus floating koi food. Benefits of Sinking Koi Food Benefits of …

koi pond

Adventures with Our New Tosai Pond

Over the years our koi keeping was improving, but the quality of our koi had not because of spawning in our pond and not knowing how to select koi. It was time to improve the quality of our koi but we did want to spend thousands. A tosai tank allows similar sized koi to grow at a faster rate because they are not competing for koi food with larger koi. It also allows us to save on koi food costs by feeding our tosai high quality food and feeding koi in our main pond less expensive food.

MEET THE EXPERT SERIES: Dr. Jessie Sanders

The Central California Koi Society (CCKS) is hosting an educational MEET THE EXPERT SERIES with Dr. Jessie Sanders, Aquatic Veterinarian, that is free for CCKS members on Saturday, May 4, 2024, at the Shinzen Friendship Garden. SATURDAY, MAY 4, 202412:00 – 2:00 pm Topic: Happy & Healthy Koi By: Jessie Sanders, DVM, DABVPHead Veterinarian and …

“Panic at the Pond”

So now, we have this pond, with koi, and some instruction on what to do with the equipment, and some without. As pond keepers we go about our life, enjoying the koi, feeding them, taking pictures of them, until one day, something goes wrong.

A fish swims the wrong way, or not like the others, a koi develops a red mark, raised scale, or even worse we find a deceased koi – every pond keeper’s nightmare!

What to do? What to do? The “panic at the pond” begins.