There are a variety of oils that can be used to attract fish, depending on the type of fish you are trying to catch. Some common oils used include: anise oil, catfish oil, cheese flavor oil, garlic flavor oil, herring oil, menhaden fish oil, minnow oil, mussel flavor oil, shrimp flavor oil and squid liver oil. Each of these oils has a different scent and/or taste that can be appealing to different types of fish. For example, anise and garlic flavors are often used to attract trout while cheese-flavored oils may be more effective for attracting catfish. It is important to note that not all fish are attracted to the same type of oil – so it is important to do some research on the type of fish you are trying to catch before using any kind of attractant.