dorsal fin. 



Figure 1 . The method of fastening the tag. 



Figure 2. Tagging block . 



In 1953, the tagging was carried out in April during the spawning of herring in Valas-Ruchey 

 Inlet. Tagged herring were released into special ice holes half a kilometer from the shore, in the 

 region of Valas-Ruchey, Boloto and Elovaya (Figure 3). 



The tagging was performed on sexually mature herring 15 to 25 cm. in length (five-year- 

 old specimens of the 1948 year class prevailed among the tagged fish). The total number of fish 

 tagged between April 20 and April 29, 1953, was 1,070; the total tag return amounted to 9.2% (99 

 tags). Tag returns began on the day following the tagging operations, 1-2 km. from the place 

 where tagged fish were released. During the period of tagging (6 days), we recaptured 79 tagged 

 specimens. I.e. , 7.4% of tagged fish. The highest tag return was from the fish tagged on April 

 28 on the Elovaya fishing grounds where we released 315 tagged herring, 40 of these sf)ecimens, 

 i.e., 12.7% were caugjit again between April 29 and May 3. The tagged herring caught were in 

 good condition, and some of them were released for the second time (Table 1). 



Somewhat later, the Polar Institute received 18 tagged. herring specimens that were caught 

 during June and July, 1953, in Valas-Ruchey, Ulyashikha, Maly Pltkul, and Luvenga inlets. 



In 1953, the greatest number of tagged fish were caught in the tagging region of Valas- 



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