PROPAGATION AND DISTRIBUTION OF FOOD FISHES, 1921. 



Spawning Seasons of Fishes Handled at Stations, etc. — Continued. 

 POND FISH-CULTURAL STATIONS— Continued. 



75 



Fish Food Used at Fish-Cultural Stations. 

 AMOUNT AND COST OF FISH FOOD USED. 



The ideal condition sought by all fish-culturists is a water area 

 so arranged that a natural food supply is available when needed, but 

 from our present knowledge the ideal is impossible of attainment in 

 most cases and aititicial feeding must be resorted to. In the rearing 

 of fish imder artificial envircmment. therefore, the problem of a sat- 

 isfactory food supply at a reasonably low cost is ever present. 



The following table gives for the fiscal year 1921 the number of 

 pounds and the cost per pound of artificial fish food used at the 

 various fish-cultural stations during the fiscal year 1921 : 



Pounds and Cost per Pound oi Fish Food Used, Fiscal Year 1;)21. 



PACIFIC salmon STATIONS. 



