Rocky Mountain \A^hitefish 



Coulter's Whitefish 



Coregonus coulterii Eigenmann 



This species is a small fish first discovered in 1892 in the 

 Kicking-Horse River at Field, British Columbia, one of the head- 

 waters of the Columbia River. Up to the present time no other 

 specimens have been obtained. It reaches a length of 8 or 10 

 inches or less, and would doubtless be a good food-fish but for 

 its small size. Nothing distinctive is known as to its habits or 

 game qualities. 





Rocky Mountain Whitefish 



Coregonus williamsoni Girard 



Two species of whitefish are known from western North 

 America, the species just described and the present one. While, 

 Coulter's whitefish is known from but a single locality, the 

 Rocky Mountain whitefish is of very wide distribution, occurring 

 in all suitable waters from the west slope of the Rockies to the 

 Pacific and from Utah to British Columbia. It prefers the cold, 

 clear lakes, such as those of Idaho, Oregon and Washington, but 

 is also found in many streams. Those living in the lakes remain 

 in comparatively deep water except during the spawning season, 

 which occurs in late fall or early winter, when they run out 

 into the tributary streams, in some places in incredible numbers. 

 This is particularly true at Big Payette Lake and in other Idaho 

 lakes. 



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