noun, plural (especially collectively) white·fish, (especially referring to two or more kinds or species) white·fish·es.
Examples from the Web for whitefish
Whitefish, Montana, where NPI is based, is apparently not sufficient.American Racist Richard Spencer Gets to Play the Martyr in Hungary|James Kirchick|October 7, 2014|DAILY BEAST
No fishes are better known in America than the salmon, trout, and whitefish, which are near relatives.Zoology: The Science of Animal Life|Ernest Ingersoll
"You know the Whitefish Creek," he said to the man he had summoned.For the Allinson Honor|Harold Bindloss
Be that as it may, dogs and young hunters were seen never again by the Whitefish people.The Spinner's Book of Fiction|Various