CAEE OF GOLDFISH 269 



ture is suitable, that is to say between 65 and 

 70 degrees. Large ponds are not needed. 

 Eight or ten, thirty or forty feet long each, and 

 about half that wide, will be found much more 

 convenient and serve the purpose of the plant 

 better than two with the same area in the aggre- 

 gate. A pond or two 100 by 50 feet, would be 

 suitable for commons, and would hold enough 

 young fish to supply a large town. 



No pond ought to be built in any shaded spot 

 nor exceed a water-depth of 18 inches. Im- 

 portant features in goldfish culture for profit 

 are rapidity of growth and transition of the 

 greatest number of the young from olive to 

 gold in the shortest space of time. Therefore 

 the ponds ought to be in the open where the 

 light is strong, and be shallow so that the tem- 

 perature from the surface to the bottom can 

 be raised quickly and be fairly even through- 

 out. 



To secure otherwise a proper temperature, 

 the flow of a spring should not be used, or at 

 least not until the temperature has been raised. 

 Water from a creek, or some source from which 

 coldness has departed, is best; and a contin- 



