This is a huge information database on fish health and diseases in my opinion that greatly signifies the authors authority in that field. I have nothing but gratitude for this book as I have already cured my fish once with its help. The only negative is that I bought this book once on amazon and the order was canceled because of damage to the book. I got it as a birthday present later though.
I like that this book is more focused at experienced aquarist who want to further their understanding rather than people who are completely new to the hobby. I also like that it is a heavy read relative to other aquarium books, In some places I felt like I was reading a microbiology textbook. Its all around aquarium health info but it has a big section on fish health. It has a lot of detailed pictures for identifying fish sicknesses, and is actually kind of gross, but I have never seen a book with so much info on the topic and I think that is its strongest point. The weakest point is there isn't much on plants which to me is just as important as the fish, I guess that's a different book.
Useful but not an exhausive resource
The book is pretty good for most aquarists as all should have something to help with the diagnostics and treatment of their pets. There's some pretty good photography of various diseases that simplifies the text, and in each section there is a little box of explanation of a point in the text, be it a bacteria type or similar. Where the book falls slightly short in my opinion is in the treatment section. I would not advocate the use of all the chemicals in this chapter and some may well be impossible to obtain for most people. In this case, I would recommend using the book then visiting a professional fish keeper, specialist shop or vet with your diagnosis after consulting the treatment section to see if there is an alternative.
All said and done anything that can help easy diagnosis and lead to the correct treatment of fish disease is a good thing.
