Figure 1. Mean total length of three fish species 

 In the Big Hole River, June 15 - August 20, 1990. 



E 

 E, 



.c 



D) 



C 

 CD 



_J 



as 



o 



h- 



100 

 90 

 80 

 70 

 60 

 50 

 40 

 30- 

 20- 

 10- 

 0- 



6/15 6/27 7/11 7/16 7/24 7/31 8/14 8/20 



Date 



Arctic grayling 



brook trout 



mountain whitefish 



15 



