What a fantastic book! I raise corys and was looking for a book that would give me more information on specific species. This book gives a very in depth description of the spawning process for Corys in general then gives more specifics under the individual species if they differ from the "general". It includes advice about water temperature, PH, and water hardness. It is just what I was looking for and is a valuable resource for anyone who is raising corys for breeding or has them in their tanks "just for fun."