Who Am I and Why This Guide Exists
My name is Jason, and I’ve spent over 30 years working in aquaculture and ornamental fish health.
This guide exists because I’ve seen the same mistakes repeated for decades — not because people don’t care, but because they’re given conflicting, impractical, or fear-based advice that doesn’t match real-world conditions.
My Background
My experience spans both professional aquaculture systems and private koi ponds, including:
Large-scale aquaculture and holding systems
Public aquarium environments
Quarantine and biosecurity management
Disease identification and treatment protocols
Domestic and high-end Japanese koi imports
Over the years, I’ve worked with millions of fish, across a wide range of environments, water conditions, and health challenges. I’ve seen what works, what fails, and what costs fish their lives.
The protocols shared throughout this site are not theoretical. They are built from outcomes, not opinions.
Why I Built This Resource
Most koi health information online falls into one of two extremes:
Oversimplified advice that ignores biology
Overcomplicated advice that requires microscopes, labs, and ideal conditions most hobbyists don’t have
Neither approach helps the average koi keeper.
This guide was built to bridge that gap — to provide practical, experience-based guidance that pond owners can actually apply safely and effectively.
My Approach to Koi Health
Everything in this guide is built around a few core principles:
Disease does not happen randomly
Most problems begin with stress, parasites, or water quality breakdowns
Early action prevents escalation
Behavior changes matter more than labels
Proactive management saves fish
I do not believe in reckless treatment, panic dosing, or throwing random chemicals into ponds. I also do not believe in waiting for perfect certainty while fish decline.
The goal is informed, calculated action.
What This Guide Is — and Is Not
This guide is:
A structured reference for koi health and disease
Based on real-world aquaculture experience
Designed to grow over time as new topics are added
This guide is not:
A replacement for veterinary care when available
A collection of internet opinions
A one-size-fits-all instruction manual
Every pond is different. The principles remain the same.
Why Trust This Information
The advice shared here reflects decades of hands-on work, observation, failure, and success. Many of the koi I’ve helped were written off by others or told to “wait and see.”
Those fish survived because someone took informed action.
This resource exists to give pond owners the knowledge and confidence to do the same.
Final Thoughts
Healthy koi are not the result of luck.
They are the result of:
Preparation
Observation
Consistency
Correct timing
This guide is here to help you understand why things happen — not just what to pour into the water.
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