Aqualog Extra DiscusThe Champions Author:Frank Schaefer It is now six years since the publication of the Aqualog South American Cichlids Vol. 4 (ISBN 3931702758), containing all the discus and angelfish variants. The discus were reviewed by one of the most internationally renowned discus experts, Manfred Goebel, whose compilation was so complete that to the present day there are hardly any noteworthy... more » new variants. But that doesn't mean that discus breeding has come to a standstill since then. This is why this book was published, to compile all the novelties and new crossbreeds from 1999 to 2004. Every true discus fan will love this update, with over 130 high quality photos of sometimes stunning discus.« less