United States Department of the Interior, Douglas McKay, Secretary 

 Fish and Wildlife Service, John L. Farley, Director 



USE OF INFRARED RADIATION IN THE STUDY 

 OF FISH BEHAVIOR 



by 



Rea E . Duncan 

 Fishery Research Biologist 



Special Scientific Report- -Fisheries No. 170. 



Washington, D. C. 

 March 1956 



