I am owning a lot of books about tropical fishes,but no one is as beautifull and usefull as this one. It is almost too good to have five stars!It contains almost 7,00 photograhs and 494 species,of which about 350 are pictured,the remaining ones are similar to the pictured and are only given a description. Many of the species here I have not found in any other book. And if you buy this book,you will be like you`ve taken a drug - your life will be the fishes. Fishes are my great passion in the life and this book is a must-have for any diver,aquarist,fish lover,or biologist. The only thing which isn`t perfect is that there stands nothing about the behaviour of the fishes - but instead they have made a separate book for that (Reef Fish Behaviour). Overall,I am a great lover of marine life,and especially caribbean reef fishes. When I first received it for christmas,I was so happy that I cannot describe it. Now I own the entire trilogy and they are very enjoyable to read and look at over and over again.