IPA: /ɪkˈθiːəˌlɒdʒɪst/
KK: /ɪkˈθiːəˌlɒdʒɪst/
A person who studies fish and their behavior, biology, and environment.
The ichthyologist discovered a new species of fish in the Amazon River.
Ichthyologist → It is formed from "ichthy-" (from Greek "ichthys", meaning fish) and "-ologist" (from Greek "logia", meaning study or science). An ichthyologist is a scientist who studies fish.
Think of 'ichthy-' which relates to fish, and '-ologist' which means someone who studies. This helps you remember that an ichthyologist is someone who studies fish.