Catfish Fishery 



During the most important months of the river catfish fishery. 

 May through September 1948, approximately 1, 300 catfish were taken 

 in 4,700 hours of angling by 2,500 fishing efforts betrveen Red Bluff 

 and Chi CO Creek. River fishing for catfish above Red Bluff vfas virtu- 

 ally absent. 



Catfish fishing ranked fourth in importance in the number of 

 fishing efforts and the nimber of hours fishedo In the number of 

 fish taken, catfish ranked third. 



The catfish natch is taken almost entirely during the months 

 of May through September. During these months the vmrmest river 

 water temperatures occur in the area where catfish are taken« The 

 catch must be controlled by thermal migrations from sloughs into the 

 river during the warmer months . The changes of catch per hour follow 

 this supposed abundance pattern and vary directly with the catch (Table 

 7) The catch per hour also increased and decreased with the catch. 



Table 7 



Catfish Sports Fishery 

 Upper Sacramento River 



1948 



20 



