This book is a Victorian-era guide to the study of fishes from morphology and division into biological classes to the description of habitats. A learner will be interested in the abundance of facts and details about such topics like the build of the fish, the morphology (the organs of nutrition, the organs of perspiration, the skeleton, etc. ), the instincts of fishes and their ability to adapt to environment, notes on the history of ichthyology and much more. The book is filled with clear and informative illustrations.