The book entitled "Classification and Identification of Freshwater Fishes" presents the general aspects of the fish identification and the systematics of fishes collected from different localities of Marathwada region of Maharashtra State. The book is organized in four main chapters. The first chapter describes the main components of General aspects, classification and key for the identification of fishes. The second chapter deals with the morphological variations. The third chapter presents various measurements and counts used for the diagnosis. Finally, the fourth chapter is devoted to the Systematics of fishes. We hope this book will be beneficial to the students seeking knowledge in fishery science subject at degree, post-graduate and research level. It provides the baseline data for the researchers and the person interested in the fishery sector.