AMATEUE FISH CULTURE 



These water-bugs, though some of them are ex- 

 cellent food for even the small fish, will attack 

 the ova, and therefore they should be kept out 

 of the hatching trays. The fish culturist should, 

 however, whenever it is possible, cultivate such 

 of these water-bugs as are good food for the fry 

 in separate ponds, as I have before recommended. 

 The best of these water-bugs are Corixce. Others, 

 such as the water-boatman, water-scorpions and 

 pond-skaters, are not of any value as food for the 

 fish. 



The larvae of Ephemeridce are very good food 

 for the fish, and should be cultivated in separate 

 ponds if possible, and some turned into the ponds 

 containing the little fish occasionally. A fair 

 proportion should, however, be kept in the ponds 

 and protected, so that a good stock of the flies 

 may be available next year. 



The larvae of Ephemeridce may be obtained in 

 many streams, and are best caught with a fine 

 gauze net. Some of them swim, but most are 

 generally captured with such a net at the bot- 

 tom of the water among the debris. Eggs of 

 Ephemeridce may be obtained sometimes from 

 another locality if they cannot be got on the 

 spot. These should be carefully preserved for 



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