By fin clipping, a ti^ui .= niuikcd =o the state fish and gome department can 

 follow his travels and learn howr better to plant fish. Sportsmen are urged to 

 report catching such trout and to keep fishermen's logs on their catches, all in 



the interest of better angling. 



Fisheries 



During the last biennium much has been accomplished in fisheries 

 work, but much remains to be done in our efforts to bring our fisheries 

 program up to the high standard of production and conservation which 

 we hope to obtain. 



With the release of men, materials and equipment following the 

 war years, the program has assumed new aspects. Hatcheries are and 

 will continue to be a keystone; but as an integral part of the program, 

 biological work begun July 1, 1947, will compliment the hatchery system 

 in an effort to solve its problems of distribution to insure the greatest 

 return possible of liberated fish from the hatcheries. This work will 

 deal not only with hatchery fish, but with all phases of fish life. This 

 will strengthen management by providing scientific data on which 

 decisions may be made. 



At the Anaconda hatchery, there has been installed a new and 

 larger pipeline to bring more water from the spring to the hatchery 

 and ponds. A concrete mixing chamber was built to mix the warm 

 water from one spring with the cold water from another spring and to 

 insure a greater flow of water with a uniform temperature. Completed 

 at Anaconda are sixteen raceway-type rearing ponds, constructed of 

 concrete, 104 feet long by 10 feet wide and 3% feet deep. Two circular, 

 concrete ponds forty feet in diameter and three feet deep were also 

 constructed. These ponds are for the purpose of holding fish to yearling 

 age and should produce annually 450,000 ffish from four to six inches in 

 length without interfering with production of smaller fish. The ice house 

 at Anaconda was made into a refrigerated, storage building capable of 



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