Fish Disease Diagnosis
Fish Disease Treatments
Ponds, Aquaria & Filtration

Dr. Johnson Dot Net

Note from Doc Johnson (

This is the entirety of principally authored by Frank Prince-Iles in the early 2000's. I bought the site from him as well as the domain and have kept it in front of the public for the last umpteenth years.

My pleasure. Truly. It's here in because I'm older and keeping up thirty domains is too hard. So this information will now start to show up in the search engine. And be useful.

Similarly, I have imported the former, HTML site that was for the information as resources there. And again, I'm not messing with "keeping up" the whole Koi-end and domain name thing for Amazon residuals of $30/a month.

But the information has saved a lot of fish through the years and shouldn't be discarded especially since there are so many "products" that simply compensate water changes and these sites try to get people's feet back on the ground with common-sense basics.


...The home of fish health and fish disease diagnosis and treatment. Whether your interest is koi, goldfish or tropical fish, the FishDoc site has a wealth of information about fish health related topics. There are comprehensive guides to fish disease diagnosis and treatment, including movies and photos,  as well as in-depth articles on water quality and pond filtration.

Using the menu at left, you should be able to navigate to a better understanding of fish health, but also of the pond which provides the fish with their entire life-support. We would suggest that you use the Key Pages first.

Fish health is a complex and sometimes baffling subject. The key to relatively trouble free fish keeping is prevention rather than cure. This means providing optimum conditions that encourage good health. It is equally important  to nip minor problems in the bud before they get out of hand. Aimed mainly at beginners and intermediates, these key pages provide a 'core' understanding of the basics of fish health.

"Koi Health & Disease" by Dr. Erik Johnson DVM is 200+ pages from Fish Health Practice - Readable by Beginners and delivered overnight from

Fish disease problems? Need some help? The help pages take you through the basics of the 'fish health work-up' diagnosis method and basic fish disease treatment methods.

90% of all health problems and fish deaths are caused by poor fish keeping! The key pages are essential reading for all beginners and intermediates who are serious about disease prevention.

What if you could just get "Here's what to treat with." and no advice or education?

VISIT:  h t t p s : / / f i s h t r e a t m e n t s . c o m

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