Table 11. Summary of kokanee gillnetting and hatchery stocking rates for Crystal Lake, 

 Montana, 1975-1993. 



A=Arlee Hatchery MS = Murray Springs Hatchery S = Soiner8 Hatchery 



In the mid to late 1980s, Crystal Lake was stocked annually with about 50,000 kokanee (Table 

 10). In 1988, kokanee eggs were scarce and Crystal Lake was not stocked. To make up for the 

 loss, 100,000 to 132,000 kokanee were planted between 1990 and 1992 and unfortunately kokanee 

 lengths dropped from 16 to 20 inches in 1988 to 9 to 14 inches in 1990. Two possible impacts 

 could have occurred. First, kokanee are known to exhibit inverse density dependent growth (as 

 numbers of kokanee increase, their size decreases to compensate for less space and food). 



44 



