354 American Fisheries Society 



are large-mouth bass, small-mouth bass, rock bass, crappie, 

 bluegill sunfish, and yellow perch. The little pickerel is 

 common in some localities, and the Ohio River muskallonge, 

 also the wall-eyed pike, are reported as frequently taken in 

 some of the larger rivers. While the catfishes can scarcely be 

 considered game fish, the bullhead and channel cat are common 

 in the lakes and streams and afford many people amusement 

 and food. The channel cat has been satisfactorily planted in 

 many of the lakes by the Ohio Bureau of Fish and Game and 

 is much appreciated. 



In Ohio the small-mouth bass is a characteristic fish of the 

 creeks and smaller rivers, while the large-mouth bass is typi- 

 cally a lake fish. In the long, quiet stretches of rivers and 

 back waters where lake conditions are simulated, the large- 

 mouth bass may be found, and similarly in rocky and gravelly 

 parts of lakes the small-mouth bass may occur, but less fre- 

 quently than in streams. In Lake Erie the small-mouth bass is 

 common to the open waters of the lake, while the large-mouth 

 bass occurs in the weedy bays and inlets. 



The main problem we sought to solve was one of practical 

 interest to the state, that of determining whether there are 

 satisfactory conditions for the production of the various game 

 fishes in the waters studied. The comparative number of this 

 year's young was considered usually a good index of the num- 

 ber and condition of the adults and of the general produc- 

 tivity of the stream or lake. The condition of the young, 

 especially as to food, which could be learned from the exam- 

 ination of the stomach contents, was studied to discover 

 whether feeding conditions were satisfactory. To check up 

 on this, however, studies were made to determine the number 

 and condition of various other fishes which serve as food for 

 game fishes, especially the various minnows, suckers, and the 

 gizzard or hickory shad. Also general studies on the abun- 

 dance, kinds, and distribution of invertebrate animals and of 

 plants, especially algae, were made in the various waters. 



