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The sticklebacks are noted for their nest building ; they may be found 

 in stagnant water filled with decaying vegetable material ; their food con- 

 sists of the spawn and eggs of other fish and also young fish. A stickle- 



In /f /, 



Stickleback. 



back is easily distinguished by its long, slender tail and the sharp, free 

 spines before the dorsal fin. 



The common or white sucker is a sluggish fish and does not like rapid 

 currents, but may be found at almost any depth. It eats everything on 

 the bottom and its mouth is on the lovv'cr side of the head and very 



Common Sucker. 



protractile. The scales are much crowded in front of the dorsal fin and 

 in the spring the male has a rosy stripe on the side. 



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