UNITED STATES DEPARTMENT OF COMMERCE 



Maurice H. Stans, Secretary 



NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION 



NATIONAL MARINE FISHERIES SERVICE 

 Philip M. Roedel, Director 



Predation by Sculpins on Fall Chinook Salmon, 



Oncorhynchus ishawytscha, 



Fry of Hatchery Origin 



By 

 BENJAMIN G. PATTEN 



Special Scientific Report-Fisheries No. 621 



Washington, D.C. 

 February 1971 



