Duties:

A non-game fish biologist is probably going to work for a state or federal natural resouce agency. Their concern will be with the typically overlooked species of fish (minnows and darters, for example). Habitat changes and human influences on the environment have threatened or endangered many fish populations. Non-game fish biologists would sample sensitive environments, determine the nature of threats to non-game species, and work with private and public entities to develop plans for protecting such species. 

Education & Experience:

A non-game biologist will definitely have a Bachelor of Science and probably a Master of Science degree as well. Many non-game fish biologists have worked for a state or federal agency for several years before being promoted to a position with this type of responsibility. 

A non-game fish biologist would work independently at times and would work closely with stakeholders at other times. Good "people skills" are a must in this job.