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GROWTH 



The rate of growth of the creek chub is dependent 

 to a large degree upon the type and amount of food 

 ready and to a lesser degree upon the stocking rate. 

 It is believed that, even though a pond were stocked 

 very heavily with chubs, an appreciable growth would 

 occur if an adequate supply of food was available. 

 Michigan studies of the potential growth of the creek 

 chub indicate that within 10 weeks after stocking with 

 fry ponds inwhich a good supply of food was available, 

 most of the fish average better than 2 inches in 

 length; in 12 weeks they average 2.5 to 3 inches; and 

 in 18 weeks between 3 and 4 inches. In Ohio, very 

 heavily stocked ponds produced fish averaging 2.25 

 inches in about 14 weeks. 



FEEDING 



It is believed that chubs being fed artificially 

 should be provided with all the food they will consiime 

 in 1 or 2 hours, and that they should be fed every day 

 for a good growth. The amount of food to be given to 

 the fish in any one pond will depend entirely upon the 

 amount consumed; by gradually increasing the daily 

 portions until some food is left untouched, the correct 

 poundage can be determined. In Michigan, chubs were 

 fed a diet of cereal and ground livers at a ratio of 

 about 3 pounds of cereal to 1 pound of liver. In Ohio, 

 creek chubs were fed meat scrap, ground carp, and 

 middlings, at a ratio of about 7 pounds of meat scrap 

 and ground carp to 3 pounds of cereal. It is believed 

 that this higher protein diet is more satisfactory than 

 that with high carbohydrate content. 



DISCUSSION 



The most important thing to do when selecting a 

 location for a creek-chub hatchery is to formulate plans 

 for the number of minnows to be raised, to determine 

 whether or not there is a sufficient volume of water 

 available at this location to operate the needed number 

 of raceways andrearing ponds. Results from creek-chub 

 studies in Michigan indicate thatwith a fair amount of 

 success in fish culture, about 800 fry may be expected 

 for every female creek chub introduced into a spawning 

 raceway. In Ohio, each female introduced into a 

 spawning raceway in 1941 gave a return of about 400 



