136 NORTHERN FISHES 



usually 40-42. The halves of the lower lip meet at a rather sharp angle 

 (Diagram 5) . The fish reaches a length of 2 feet. 



The silver redhorse ranges from the Hudson Bay drainage of Mani- 

 toba to Quebec and southward to northern Alabama and to Missouri. 

 It is abundant in the Minnesota and St. Croix rivers and in the Missis- 

 sippi River as far up as Grand Rapids, Minnesota. Cox (1897) reported 

 it from the Des Moines River, and Surber in 1911 found it in the Red 

 Cedar River. Evermann and Latimer reported it as "not uncommon" 

 in Lake of the Woods. Our collections show it to be fairly common in 

 Lake of the Woods, where it reaches a very large size. Wagner (1908) 

 secured one adult and several young at Lake Pepin. It is well distributed 

 over the state, though not nearly so abundant as M. aureolum. Greene 

 (1935) reported it from many localities in Wisconsin, including tribu- 

 taries of Lake Superior. 



It is an excellent food fish, though somewhat bony. It sometimes bites 

 on a baited hook but is more frequently caught in seines by commercial 

 fishermen. 



NORTHERN REDHORSE (Largescale Sucker, Redfin, 

 May-squaw-she-gwah-nay-see of the Red Lake Chippewas) 



Moxostoma aureolum (LeSueur) 



The northern redhorse (Figure 21) is very much like M. anisuruTn, 

 but the tail as well as the lower fins are always red. The caudal lobes are 

 subequal. The dorsal fin is rather low, is smaller than in M. anisurum. 



Figure 21. Northern redhorse, Moxostoma aurcohou. 18 inches long. 



and has 12-14 developed rays. The mouth is small. The halves of the 

 lower lip meet in a straight line in adults, at an obtuse angle in young. 

 The head is bluntly subconical and short. In adults it is contained 4.3 

 to 5.4 times in the length, and in young, 1 to 3 inches long, it is contained 

 3.5 to 3.8 times in the length. The scales in the lateral line number about 



