SUITABLE FISH AND WATERS 



streams, but there are no doubt many waters 

 which would carry a good head of grayling 

 which at present contain only trout. They 

 probably do much less harm than most of the 

 coarse fish constantly found in trout streams. 

 The great crime attributed to them is that they 

 eat the spawn of the trout, but I am inclined 

 to think that the harm they do in this way is 

 much over estimated. They spawn at a different 

 time and would not be likely to frequent the 

 spawning places at the same time as the trout. 

 I have no doubt that an infinitely greater pro- 

 portion of trout ova are eaten by the trout 

 themselves than by grayling in rivers which 

 contain both fish. Chalk streams and those 

 rivers with gravelly bottoms and with alternate 

 shallows and pools seem to be the most suited 

 to the grayling. 



Among coarse fish the rudd is one of the best 

 from the fly-fisher's point of view. It takes 

 the fly readily, is very prolific and very easy to 

 introduce. It thrives remarkably well in ponds 

 which contain a good supply of food. Its fry 

 serve as excellent food for other fish, particularly 

 trout, but I have known cases where it increased 

 rapidly in a pond at the expense of the trout. 



17 c 



