Mar., 1920] Food and Fish Associates of Voting Perch 145 



Fauna: This shallow bar gave minnows, two perch fry and 

 some young Percina caprodes zebra. 



Locality 39. Sand and boulder bottom with three feet of 

 water; no vegetation. 



Fauna: Fry of small-mouthed bass were added to the list of 

 Locality No. 38. 



Locality 40. Long beach with steep slope; fine sand bot- 

 tom; no vegetation. 



Fauna: Adults of Percina caprodes zebra and minnows. 

 Fry of small-mouthed bass, large-mouthed bass, Percina 

 caprodes zebra and perch. 



Adults of Percina caprodes zebra were very abundant here. 



In the mouth of an inlet to a swamp in this locality the fry 

 of the rock bass and carp were added. 



Locality 41. Rubble beach with gradual slope; consid- 

 erable aquatic vegetation. 



Fauna: Adults of Percina caprodes zebra, Cottogaster 

 coplandi, Diplesian blenioides and minnows. Fry of perch,, 

 small-mouthed bass, rock bass and Percina Caprodes zebra. 



Locality 42. Protected sand and gravel beach with no 

 vegetation. 



Fauna: Adults of Cottogaster coplandi and minnows. Fry 

 of small-mouthed bass. 



4. Distribution of Young Perch and Its Associates. 



Within the limits of the region studied the young fry has a 

 general and rather uniform distribution. In only a few of the 

 above localities does the perch fail to appear and in such local- 

 ities there is a scarcity of other species as well. Little can be said 

 of the vertical range beyond a depth of five feet but practically 

 all the specimens taken were found at a depth of between two 

 and four feet. 



There seems to be a little choice in the character of habitat, a 

 slightly greater number being found in localities having flat, 

 sandy bottoms and some submerged vegetation. The larger 

 perch fry were all taken in such localities and all yearlings and 

 adults taken were also found there. The character of the bottom 

 and the presence or absence of vegetation appear to have lio 

 effect upon the younger perch in its distribution, for as it is 

 feeding mainly upon Entromostraca in its younger stages its 

 distribution would be limited only by its physical capacities to 



