30 



FISH FARMING I 



also that each pond can be controlled independent of the 

 others, and that any number of them in any position, or all of 

 them together, can be handled after ai similar manner. 

 Whether the ponds; be used for rearing fish or for sporting 

 purposes, or for both, the advantage of this arrangement is 

 obvious, for should one or two very large fish remain in a 

 pond after it has, presumably, been cleared, or should a few 

 of them grow considerably faster than the others as is very 

 frequently, indeed most often, the case they will assuredly 



PONDS ON A STREAM. 



prey upon the new stock introduced for rearing purposes, or 

 the old stock retained for sporting purposes. One or two only 

 of these older and bigger fish among a large number of smaller 

 ones spells disaster; for all trout are more or less cannibals, 

 and unless the fish in the pond especially for rearing pur- 

 poses are a pretty " level " lot in size, the smaller specimens 

 are sure to pay the penalty for their unfortunate backward- 

 ness in growth. A judicious "sorting" and the removal of 

 any very large fish, therefore, becomes advisable from time 

 to time. 



