246 NORTHERN FISHES 



tributed over the southern half of both Minnesota and Wisconsin. It 

 occurs in both lakes and streams. It assembles in large schools and 

 swims and feeds near the surface. 



This rather delicate fish feeds extensively on planktonic Crustacea 

 and small insects, and also on insect larvae (principally of gnats and 

 mosquitoes) , surface insects, and copepods and other Entomostraca. 

 Its breeding habits and life history have been studied in detail by 

 Hubbs (1921) and Cahn (1927). It spawns among aquatic plants. 

 The eggs become attached to the plants by the long filament Avith 

 which each egg is provided. The eggs are widely scattered, an egg here 

 and another there. The silverside has little value as a bait minnow 

 but is utilized for food by many game fishes. 



