FISH DISEASE, Diagnosis and Treatment
Edward J. Noga, M.S., D.V.M.
Mosby - Year Book, Inc. (800) 325-4177
Chris Andrews has also published on the subject.
Hope this helps.
Doug Warmolts
Columbus Zoo
P.O. Box 400
Powell, OH 43065-0400
dwarmolt at postbox.acs.ohio-state.edu