Fish Disease Diagnosis
Fish Disease Treatments
Ponds, Aquaria & Filtration

We have Koi and goldfish. We also noticed some small fry yesterday about 1/2'-3/4' long. At what size do koi get barbels?
I can see barbels on Koi as small as 3/4 inch - you should put them in a clear glass or plastic container and look closely. Even from a very small size, such as 3/4" you will notice that Koi are elongated, whereas Comet babies are shaped elliptically, much like a human eye.
"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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