What is "coregonus hoyi"

Cisco \Cis"co\, n. (Zo["o]l.) The Lake herring ( Coregonus Artedi), valuable food fish of the Great Lakes of North America. The name is also applied to Coregonus Hoyi, a related species of Lake Michigan. [1913 Webster] ||

The bloater (Coregonus hoyi) is a species or form of freshwater whitefish in the family Salmonidae. It is a silvery-coloured herring-like fish, long. It is found in most of the Great Lakes and in Lake Nipigon, where it inhabits underwater slopes. This fish is not to be confused with the extinct deepwater cisco (Coregonus johannae), a large fish that shared a common name with the bloater.