18 DEPARTMENT OF GAME AND FISHERIES No. 9 



A small number of eyed eggs were planted on an experimental basis in inaccess- 

 ible streams in Thunder Bay District and a few eyed eggs were supplied to the 

 Department of Biology, University of Toronto, for experimental study. 



BROWN TROUT: 



The Department's plan regarding the re-stocking of streams in southern Ontario 

 with brown trout was outlined in some detail in the previous report. Since brown 

 trout are notional in their habits and difficult to catch, they are valuable for re- 

 stocking suitable waters in thickly populated areas. 



Every year more encouraging reports of angling for this species are received 

 and intensive re-stocking of streams in southern Ontario will undoubtedly give 

 good results in the near future. 



Our fingerling distribution exceeded that of the previous year by approximately 

 38,000 and this number would have been trebled except that 100,000 fingerlings 

 were retained over winter for distribution as yearlings the following year. Propa- 

 gatory work with brown trout will be intensified. 



RAINBOW TROUT: 



(a) Steelhead — 



Practically the same number of steelhead fingerlings were planted this year 

 as in the one preceding. These were distributed in streams having direct access to 

 larger streams or lakes, since this species has a strong migratory tendency to leave 

 smaller streams in which they are planted in their second or third year. Efforts 

 have been made to establish this species in the lower reaches of trout streams which 

 are no longer suitable for trout on account of the high water temperature prevailing 

 in summer. Trout streams tributary to lakes, somewhat land-locked in character, 

 for example Lake Simcoe, have also been stocked, care being taken to introduce 

 them to streams where dams or other barriers will not interfere with the annual 

 migration to suitable spawning grounds. Large streams in Northern Ontario in 

 which this species has become established are also being stocked. 



(b) Fall Spawning Rainbow Trout — 



Approximately 3,500 fall-spawning yearlings and older rainbow trout were 

 distributed to waters suitable for them, that' is the larger, lower reaches of trout 

 streams. Experience in re-stocking with this strain in waters in the State of 

 Minnesota has shown that it will thrive in the larger and warmer portions of trout 

 streams which are no longer suitable throughout their entire courses for speckled 

 trout and they do not show the same tendency to migrate as the closely related 

 form, the steelhead. 



(c) Kamloops Trout — 



A fairly large number of adults of this species have been carried over 

 successfully in ponds at Normandale. At the moment it is difficult to state how 

 successful collection of spawn from these breeders will be; this will depend on the 

 fertility of the sexes. 



If this close relative of the rainbow trout, which has been described in previous 

 reports, can be established in our lakes, it will be quite desirable, since it is an ex- 

 cellent sporting fish taken on the fly and by trolling. These trout, except during 

 the hot weather of summer, are usually to be taken near the surface. They show 

 no tendency to migrate from the lakes in which they are planted. Lakes suitable 

 for speckled trout supplied with cold spring water from running brooks are con- 

 sidered suitable for Kamloops trout. 



LAND-LOCKED SALMON: 



The Department was able to secure only a few eyed eggs of this species during 

 the preceding year, and the fish cultured therefrom are being retained. 



