ANNUAL REPORT, 1942-43 19 



REPORT OF THE FISH CULTURE BRAl^CH 



I^'ish cultural operatioiLS were carried on during the year in tWenty-seven provincial 

 government hatcheries and rearing stations. Due to #krtime conditions there was no 



expansion of the hatchery system to include new plants, and only proper maintenance and 

 essential repair work were undertaken. 



THE CULTURE AND DISTRIBUTION OF FISH 



A detailed account of distribution of hatchery reared fish by county or district, species, 

 age-class, and number planted is given in appendices 1 and II. In the following paragraphs, 

 comparison of the year's distribution with that of the previous year and other pertinent data 

 are given. The total output of all species for the year was approximately 14% higher than 

 in 1941-42. 



Speckled Trout: 



The distribution objective was 3,000,000 speckled trout yearlings, but the year's total 

 was somewhat lower, namely 2,918,500. Due to congestion at the Dorion Trout Rearing Station 

 it was necessary to plant a fairly large number of fingerlings, namely 380,000. For the same 

 reason smaller numbers wei;p planted from -Hill Lake, Sault Ste. Marie, Chatsworth and Cod- 

 rington. The private hatchery at Caledon had approximately 170,000 fingerlings which could 

 not be accommodated; these were distributed as effectively as pos,sible in suitable and publicly 

 fished waters. On the whole, approximately 60% more fingerlings were planted as compared 

 with the preceding year. 



Brown Trout: 



The production of brown trout yearlings, was 3.8 per cent, greater than that of the 

 preceding year. 



Rainbow Trout: 



Distribution of rainbow trou.t yearlings was 9.8 per cent, greater than in 1941-42. 



Kamloops Trout: 



This species was introduced to a number of carefully selected lakes in Ontario, and it 

 promises to provide excellent game-fish possibilities, at least in some of the lakes chosen. 



During the year 24,800 yearlings were planted as compared with 25,000 in 1941-42. 



Lake Trout: 



Due to inclement weather which occurred during the lake trout spawning season in the 

 fall of 1942, the egg collection was somewhat reduced. As a result the distribution 

 of fry aod fingerlings for the year under discussion was correspondingly reduced. The total 

 production of eyed eggs, fry and fingerlings was 18 per cent, less than that of the preceding 

 year. However, over 10,680 yearling lake trout were planted, which should have a compen- 

 satory and equalizing effect. 



Whitejish : 



The number of whitefish planted was approximately 5 per cent, greater than that of 

 the preceding year. 



