The branch of zoology that handles the research of fishes.
The part of zoology devoted to the analysis of fish.
The natural history of fishes; that branch of zoölogy which relates to fishes, including their structure, classification, and habits.
The research of fishes; that department of zoölogy which treats of fishes, with regards to their particular construction, relations to one another also to various other creatures, category, habits, and utilizes. Abbreviated ichthyology