206 FISH CULTUEE 



in retaining the brood-fish in hatching-ponds, 

 where they will live safely for an indefinite 

 period provided the ponds are large and deep 

 enough. I have kept several of the Chautauqua 

 Lake nmscallonge for more than a year in a 

 pond 100 feet long and 30 feet wide, with a 

 water-depth of from three to five feet. These 

 fish ripened both eggs and milt. 



