ABSTRACT 



A specialized laboratory has been built in 

 Seattle, Washington, for obtaining information 

 about fish behavior. The laboratory includes a 

 concrete experimental tank, 60 feet long, 20 feet 

 wide, and 5 feet deep, in which water can be 

 recirculated at flows up to 40 cf s , and several 

 smaller tanks for a variety of studies. Features 

 of the laboratory include facilities for holding 

 and acclimatizing fish, electronic control units 

 for electrical studies, a heat-exchange system 

 for temperature control in small tanks, means for 

 controlling light conditions, and provisions for 

 making chemical analyses. 



