Ichthyology is the branch of Zoology devoted to the study of fish. This includes skeletal fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha).

So in a broader sense, ichthyology is scientific study of fishes, including, as is usual with a science that is concerned with a large group of organisms, a number of specialized sub-disciplines.

Taxonomy, anatomy (or morphology) behavioural science (ethology), ecology and physiology.

Because of the great importance of fish as human food, economic ichthyology is a significant segment of the field.

In India we do not have universities or colleges offering a specific in ichthyology but there are a few institutes in the United Kingdom, United States of America and South Africa offering postgraduate programmes.