Author: Dr. Erik Johnson

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Folks ask me all the time, what’s new in the new book? If I already have the…

This article separates a couple kinds of Addison’s from the typical kind which has signs referrable to…

Koi Type Chagoi – (Chah’-goy) We’ve been spending a few issues of Lifestyles looking at various kinds…

The “Golden Rules of Fish Keeping” Quarantine ALL Your New Fish. You Can Never Have Too Much…

I have built a new pond using rubber roofing material as a liner. Is this safe for…

Koi will almost never eat or pick on smaller koi, so the answer’s “No” but they like…

What is possible Factors that detract from clarity Compensating or correcting these factors What Is Possible “Clean”…

Ammonia is the primary chemical waste product of the fish. It’s basically fish urine. It can accumulate…

Could You Please Explain What Flashing Is? My Koi fish will occasionally jump or do little twists…