CHAPTER VII 



TROUT. MANAGEMENT OF THE FRY 



A GREATLY varying period of time having 

 ^^ elapsed and the yolk-sacs of the alevins 

 being nearly absorbed, the fish culturist will see 

 that some of the little fish begin to leave the pack 

 at the bottom of the tray, and to swim up 

 against the current. When this is observed some 

 very finely divided food should be offered to these 

 alevins. They will probably dart at the minute 

 pieces of food floating past and a little more may 

 then be given to them. If, however, they do not 

 take any notice of little pieces of food or any 

 other matter which floats past them, they should 

 not be tried again till the next day. In a few 

 days from the first of the alevins beginning to 

 feed, all of them will be working up with their 

 heads to the current, darting at any particles 

 floating in the water. The tray should now be 

 lowered so that its edge is some three or four 



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