FISHES OF GREEN LAKE, WIS. 



Table 2. — Gill-Net Catches in Green Lake, 1919.' 



257 



1 All nets were 4 by 75 feet. 



 Indicates that nets of the other meshes than those listed for catches on this date were set at the depth given, but nothing 

 was caught. 



• Indicates that five nets having K, i, i^a. 2, and 3 inch meshes were set, but nothing was caught. 



* Set string of nets on steep slope. 



* Bare bottom. 



• Among plants. 



' Spring Lake Creek, half mile above mouth; set nets alternately from either bank, away from mouth, in following order: 

 J, il4, K, 1, and 3 inch mesh. 



Table 3 gives a summary of all the gill-net catches (except that of Sept. i in Spring 

 Lake Creek) arranged according to depth. 



This summary shows that ciscoes are confined to depths below 40 m. and the 

 "catch per hour" figures indicate that ciscoes are the most abundant larger fishes in 

 the lake. Young ciscoes probably spend a year or more in shallow water, for schools 

 of from 100 to 200 fingerlings were observed three times, swimming in the middle of 

 the lake at the surface in bright sunlight. The pickerel ranges deeper than other 

 shallow-water species. 



There is a zone above the ciscoes (20 to 40 m.) where there are few or no fishes. 

 Footing up the "catch per hour" for all species at all depths we have the following 

 figures: Total hours all nets were set — 419.4; catch per hour — bluegills, 0.094; carp, 

 o.oi; cisco, 1.447; largemouth black bass, o; rock bass, o.i; perch, 0.13; pickerel, 

 0.207; pumpkinseed, o; smallmouth black bass, 0.03; sucker, 0.053. 



If the abundance of fishes large enough to be caught in gill nets is judged by the 

 "catch per hour," the species occur in the following ratios in Green Lake during the 

 summer; Cisco, 48; pickerel, 7; perch, 4; rock bass, 3; bluegill, 3; sucker, 2; small- 



