It gives me immense pleasure to bring out the first edition of the book "Ichthyofaunal diversity and ecology at Jammu highland, India". This book will be useful for the research scholars working in Ichthyofaunal diversity and students studying in Universities and Colleges. The book has been written in simple language so that every student can understand the basics of Ichthyofauna diversity. The book deals with basic ideas of fish identification and morphometry. The book discusses every aspect of methodology from the collection of fishes, their identification and preservation for future use.