SPAWNING OF BLACK BASS 45 



Nourishing Fry. — The general practice is to" 

 allow the fry to remain in the cribs until the 

 sac is entirely absorbed, and the fish rise to the 

 surface. It is important that the advanced fry 

 be removed from the crib the moment they be- 

 gin to swim freely, for the reason that in the 

 confined space they will dart at each other, 

 often nipping off the pectoral or anal fins. 



Experiments made in feeding fry in cribs be- 

 fore transferring them to the fry-ponds have 

 fihown satisfactory results. A bunch of chara 

 moss was suspended by a string from the board 

 on top of the crib about midway from the bot- 

 tom, and the little fish immediately attacked the 

 small crustaceans (daphnia and cyclops) which 

 swarmed therein. The little fish thus fed were 

 held ten days in the crib after they had swurq 

 to the surface, making the total age of the fish 

 fourteen or fifteen days when they were finally 

 transferred to the fry-ponds. They were more 

 than double the size of the fish which had not 

 been fed in the crib, and there seemed to be a' 

 perceptibly smaller amount of cannibalism. 

 It is believed to be advantageous to feed the 

 ifish before putting them in the fry-ponds, both 



