Fish Disease Diagnosis
Fish Disease Treatments
Ponds, Aquaria & Filtration

What magnifying power is necessary to perform biopsies on fish?
A magnifying lens will seldom yield a diagnosis of fish diseases, but a microscope of a modest power, for example, 40 x is sufficient for most diagnostic work. For some of the very smallest parasites, a combined power of 400x is required; in the specific case of Costia.
"Koi Health & Disease" by Dr. Erik Johnson DVM is 200+ pages from Fish Health Practice - Readable by Beginners and delivered overnight from Amazon.com

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

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Expanded Content by Dr. Erik Johnson, DrJohnson.com and Used with Permission; Frank Prince-Iles ©2009 All Rights Reserved