Synopsis The book “Advances in Aquatic Biology and Toxicology” has been prepared by deeply concerned about, environmental issues.  The objective of this book is to provide the readers materials on the subject in a lucid and readable form so as to enable the environmentalists, zoologists botanists and even the common men to understand the subject properly.  

The book has been written for undergraduate and post-graduate students of different universities and colleges.  It is on attempt wherein authors have tried to incorporate the recent aspects of environmental studies.  It provides latest materials for the students.

We are grateful to all the contributors who responded promptly by making their articles available which had catalytic impact upon us to complete the task of publishing this book.

This book will be very useful for the students, teachers and researchers in this field and it can also be used as a standard reference book.