TWENTY-SKVKX'III li li;.\M AT; REPORT. 



43 



weak ciiihryos. Tlicsc siicimiiiiIiciI cirly in llic scjisdii, Ixil tlx- rciiiaiiHler, 

 819,()()(> were distribvitod in the hikos of iho liitjli Sierra and in lakes in 

 tlie Yoseinite National I'arlc. Kc|)()rts received from a nnniher of lakes 

 where tliese iisli have been introduced are. that tliey ;ire tlii-ivin^ and 

 niakint;' a rapid j^rovvth. The ijolch'n trout, is a very delicate fish and is 

 not resist;int to bacterial infeclion of a pat'io^'enie nature. This, no 

 (h)ubt, is due to the fact tliat these lish have inhabited the ])nre water of 

 the high Sieri'a i-ange, that is tVee from l)aeteria and fnn.u:oid growths for 

 many ages and have not the resistance of the species that have their 

 range in lower altitndes or the exotic species that have l)een introduced 

 into this state from the easterji states and Europe. 



The golden trout by their bright colors, fall prey to the other six'cies. 

 They will not thrive where other species of trout are living and should 

 only be planted in waters where no other species of predaceous tish 

 exist. No collection of golden trout eggs was made during 1921 or 1922, 

 as we were desirous of determining the results of the plants already 

 nuule. We would reconnnend that tiie golden trout distribution be con- 

 fined only to the barren lakes of the high Sierra range, until at such 

 time as a resistant stock of these fish can be propagated. 



RAE LAKES STATION. 



The Rae Lakes Egg Collecting Station was operated during the sea- 

 sons of 1920, 1921 and 1922. During these three seasons, 1,488,000 

 eggs were collected. The fish do not yield over 250 eggs each on an 

 average caused by the lack of proper food in the lake owing to the high 

 altitude, 10,500 feet. The eggs are delicate and considerable extra care 

 must be given them in the early stages to produce strong fry. As soon 



m 



M 





Fig 12. On the summit, 13,000 feet, with rainbow trout 

 e^gs from Rae Lakes, July 20, 1920. Photograph by 

 L. J. Stinnett. 



