fishes
An ichthyologist is a scientist who studies fish, including their biology, behavior, distribution, and conservation. They often work to understand fish populations, habitats, and ecosystems in order to manage and protect these aquatic resources.
An ichthyologist studies fish. The word consists of two greek roots. Ikhthus is the greek root for 'fish' while logos means 'study'. Thus, ichthyology is the study of fish. An ichthyologist is a person who studies fish.