Prosopium Cylindraceum is a type of whitefish found in the freshwater lakes of North America. Also known as Round Whitefish or Mamejishan, this species is famous for its delicious taste and nutrient-rich characteristics. Although the name Prosopium Cylindraceum is commonly used, there are several synonyms for this species. These include the following: Coregonus Cylindraceus, Roundfish, and Great Lakes Whitefish. Some of the regional names for this species include Mackinaw Whitefish, Lake Whitefish, and Sault Whitefish. Overall, Prosopium Cylindraceum is a versatile and popular fish among anglers, recreational fishers, and gourmets alike, and its synonyms reflect this widespread recognition and esteem.