However, when you get into estuarine type areas where salt and fresh water commingle and fish of both types can be found the issue becomes less clear. Obviously if you are fishing in pure fresh water where no saltwater species live, you need a freshwater license and likewise if you are fishing in the ocean you need a saltwater license. In general, you need a freshwater license to take freshwater fish and a saltwater license to take saltwater fish, unless one of the exemptions specified on this Web site applies to your situation.