Microbiologist
A scientist that studies classification is called a Taxonomist. They categorized or classify groups of organisms and they also name the group.
The name of a scientist that studies sports is called a sports scientist.
An environmental scientist is a scientist who studies the environment and its interaction with living organisms. They may specialize in areas such as ecology, conservation, climate change, or pollution.
taxonomistBotanist
An arachnologist
A virologist is a scientist who studies viruses.
What is the name of a person that studies organisms
A scientist who studies animals is called a zoologist.
A scientist who studies radioactivity is called a nuclear physicist or a radiologist.
A scientist who studies animal life is a zoologist. There is no particular name for a scientist that specialises in platypuses.
The name for this type of scientist is a teuthologist
This answer is a entomologistA scientist who only studies fish is called an ichthyologist.