Videos on YouTube for education and just plain fun!

https://www.youtube.com/user/SOCOKOI/feed, Including:

How I Feed Oranges to Koi

Catch and Transport Koi

Exam and Injection of Sick Koi

Salt Dip for Koi

Koi Fire Rescue 2013

Hungry Koi Tosai

Other videos

Koi Pond Construction Tutorial, Courtesy of - The Pond Digger