944f210d___Changes_in_Fish_Species
[Decade] 1960 [Market Stimulation] Omstead Foods of Wheatly Ont. developed a machine for processing Smelt [Fishing Technology] NA [Changes in Fish Species] 
-Lake Whitefish, Lake Herring and Blue Pike were all commercially extinct by 1960 -Yellow Perch and Smelt contributed to over two-thirds of Canadian catch during the 1960's -White Bass fishery grew but fell victim to mercury pollution in the western basin and was closed down
Changes in Fish Species