STOCKING 237 



thrive wonderfully for the first year without any extra 

 feeding, but that later on the fish begin to fall off in 

 condition. This is probably due to the partial ex- 

 haustion of the supply of natural food. The balance 

 of life has been disturbed and must be restored. The 

 natural food supply can probably be replenished by 

 cultivating the water and introducing snails, shrimps, 

 &c., and in the meantime the help of artificial feeding 

 should be called in. 



A new pond or lake recently constructed, and 

 containing no water-vegetation and little natural food, 

 must not be expected at once to support a large 

 quantity of good-sized fish in prime condition, unless 

 the cultivation of the water is carefully attended to, 

 and in some cases artificial feeding also provided. 



It is surprising, however, to find how large a 

 number of trout can be made to thrive and fatten for 

 the rod or table in a small space if due attention is 

 paid to the cultivation of the water and development 

 of its natural resources. 



The three principal breeds of fresh-water trout 

 raised by the British fish-culturist are the English 

 brook trout (Salmo fario\ the Loch Leven trout 

 (Salmo Levenensis\ and last, but not least, the rain- 

 bow trout (Salmo irideus). 



iO) the English brown trout, is, as he deserves 



