FISHES OF THREE WISCONSIN LAKES 9 



meters, 3; 15-20 meters, 4. These results of course leave out 

 of consideration the fishes which are too small to be caught in 

 gill nets. These would increase the number of species and 

 individuals in shallow water. The results do indicate the dis- 

 tribution of the commoner, large fishes. 



The black bullhead, pickerel, short-headed red-horse, and 

 white bass were not caught below five meters. The lake carp, 

 long-nosed gar, and white-nosed red-horse ranged down to ten 

 meters. The perch extended to fifteen. The carp and channel 

 cat were caught in the deepest and shallowest zone where 

 there was the most mud but were not taken in intermediate 

 waters. The "hackleback," or sand sturgeon, was more abun- 

 dant in deeper water and the sauger was most abundant at 

 intermediate depths. Only four species of large fishes com- 

 monly take advantage of the food supplies in deep water. Clams 

 were somewhat more abundant at greater depths and cray- 

 fishes were only caught in deep water. 



These generalizations are intended to apply only to the 

 summer season. The distribution of many fishes is doubtless 

 quite different in winter. Furthermore, there are fishes in the 

 lake (like the spoonbill, black bass, yellow bass, wall-eyed 

 pike, mooneye, and skipjack), which were never caught in gill 

 nets, and hence their distribution is more or less unknown. 



Arranged according to their abundance as judged by the 

 catch per hour in gill nets, the fishes in Lake Pepin rank in the 

 following order: sauger, .911; hackleback, .855; yellow perch, 

 .351; white-nosed red-horse, .109; pickerel, .103; short-headed 

 red-horse, .098; carp, .027; channel cat, .025; long-nosed gar, 

 .021; lake carp, .006; black bullhead, .005; white bass, .005. 



The fifty foot minnow seine was hauled in eight different 

 localities on different days in Lake Pepin, the total length of al 

 the hauls being about 1546 meters. Twenty-three species of 

 fishes were caught. In the following summary of the catches, 

 the first figure indicates the number of times a species was 

 caught and the second, the total number of individuals caught: 



Percina caprodes, log perch 8 625 



Notropis jejunus, shiner 6 270 



Notropis atherinoides, shiner 2 250 



Stizostedion sp.?, young pike 7 156 



Percaflavescens, yellow perch 4 133 



