EEPORT OF THE COMMISSIONER OF FISHERIES XXXIII 



SALVAGE OF TOOD FISHES FROM OVERFLOWED LANDS 



High-water conditions during the spawning season in the Missis- 

 sippi River rescue territory limited the possible amount of salvage 

 work, and while the operations were prosecuted for the usual length 

 of time — from the beginning of July to the end of November — the 

 results were greatly curtailed as compared with those of an average 

 season. Eains and abnormally cool weather prevailed throughout 

 most of the summer and fall, providing extensive feeding grounds, 

 and in many instances the rise and fall of the river afforded avenues 

 for the ready access of the fish to the river 'channels. Over an area 

 extending from Prescott, Wis., on the north, to Andalusia, 111., on 

 the south, 62,220,565 fish were salvaged, of which 911,416 were 

 shipped to applicants. All of the remainder were released in the 

 Mississippi River and its adjacent tributaries. 



The customary mussel-infection work was conducted in connec- 

 tion with the rescue operations. The unusual weather and water 

 conditions existing had the effect of producing stronger and better 

 fish to serve as hosts for the .larval mussels, and a total of 1,783,- 

 561,850 of the latter were used in the inoculations, this number ex- 

 ceeding the total of the preceding season by more than 33 per cent. 



PROPAGATION OF FISHES OF INTERIOR WATERS 



The results of the year's work with the brook, rainbow, and black- 

 spotted trouts were fairly satisfactory. Eggs from wild fish of 

 one or more of these species were taken in considerable numbers in 

 fields adjacent to the stations located at Leadville, Colo., Springville, 

 Utah, Saratoga, Wyo., and Bozeman, Mont., as well as in the Yel- 

 lowstone Park. A record collection of rainbow-trout eggs from 

 domesticated stock was made at the Manchester (Iowa) station. A 

 second successful season's work was accomplished in the propaga- 

 tion of Loch Leven trout in the Meadow Creek (Mont.) field during 

 the fall of 1924, and the collection of rainbow-trout eggs there dur- 

 ing the spring of 1925 exceeded that of any year since this substa- 

 tion was established. In making field collections in Utah the em- 

 ployees of the Springville station worked in conjunction with and 

 under the immediate supervision of the Utah State officials, and the 

 station received as its share of the output approximately 1,341,000 

 brook-trout eggs, 700,000 rainbow-trout eggs, and 300,000 eggs of 

 the black-spotted trout. 



Fish-cultural operations in the Yellowstone Park field were con- 

 ducted under the direction of the district supervisor of the Missis- 

 sippi River rescue station, and 25,950,500 black-spotted trout eggs 

 were secured in the course of the fiscal year. 



Apprbximately 140,000,000 buffalofish eggs were collected on the 

 Atchafalaya River in Louisiana between March 7 and April 4, 1925. 



ALASKA FISHERIES SERVICE 

 EFFECT OF THE NEW FISHERY LAW AND REGULATIONS 



Alaska fishery operations in 1924 were conducted in accordance 

 with the terms of the several acts applicable thereto, including the 

 new Jaw approved June 6, 1924. It became necessary to revise ex- 



