22 UNIVERSITY OF WISCONSIN STUDIES 



mon than the perch are the carp, white bass, cisco, largemouth 

 black bass, rock bass, sucker. Among the small fishes along- 

 shore the perch is also most abundant. 



Green Lake is deep and its lower strata are always cool. Its 

 shores are mostly sandy with little vegetation. The abundant 

 fish in this lake is the cisco, and the perch is rare. The pickerel 

 is quite common and shares the shallow water habitats with 

 suckers, rock bass, bluegills, and smallmouth black bass. The 

 smallmouth black bass is the most common of the small shore 

 fishes. There are also Johnny darters, perch, largemouth black 

 bass, blunt nosed minnows, top minnows, shiners, etc., along- 

 shore. 



Lake Geneva, like Mendota, stagnates somewhat in sum- 

 mer. Its deeper water remains fairly cool, in this respect being 

 intermediate between Green Lake and Lake Mendota. Its 

 shores are monotonous and stony. The dominant fish in this 

 lake is the perch, but the rock bass approaches it in numbers. 

 There are also many smallmouth black bass, ciscoes, and pike. 

 Suckers and pickerel are quite common. The perch is most 

 abundant among the small shore fishes, but smallmouth and 

 largemouth black bass are quite common. There are apparently 

 few or no darters. 



Lake Michigan, in the region of Sturgeon Bay, has sandy and 

 rocky shores. It is the largest and deepest of any of the lakes 

 studied and its deeper parts are always cool. Its most abundant 

 fish is the perch, with the pickerel second in numbers. In deep 

 water the dominant fishes are ciscoes and lake trout. There are 

 not many small fishes alongshore, but shiners, perch, small- 

 mouth black bass, darters and other fishes occur. 



Lake Pepin is in the direct course of the Mississippi River 

 and, while its current is not rapid, the whole body of water is in 

 continual motion. Lake Pepin is rather turbid and the summer 

 temperatures are high at all levels (Table I). The gill nets show 

 their smallest catch per hour in this lake, but more species are 

 present than in any of the others. The sauger and sand stur- 

 geon (hackleback) are the most common fishes. The perch, red 

 horses, carp, and catfishes are also present in numbers. The 

 log-perch is the most abundant small fish alongshore. Shiners, 

 small pike, perch, and largemouth black bass were also quite 

 common. 



