SALMON FAMILY (Salmonidae) 

 Key to the many members of salmon and trout found in Maine 



L Dorsal fin seldom spotted; anal fin longer than high with 13 or 

 more developed rays 



Pacific Silver Salmon 



Oncorhynchus kisiitch 

 (Walbaum) 



p. 25 



Dorsal fin usually with many black spots in young and adults; 

 anal fin higher than long with 12 or less developed rays . . 2 



Black or red spots (Adantic salmon up to two years have a few 

 red spots); vomer (bone in center of roof of the mouth) with 

 a plain shaft bearing teeth in alternate rows; scales conspicu- 

 ous 3 



Gray or red spots; vomer (bone in center of roof of the mouth) 

 with shaft depressed, toothed only on anterior end; scales in- 

 conspicuous 5 



21 



