SALMON FAMILY (Salmonidae) 



Key to the various species of the salmon and trout family found in Maine 



1. Dorsal fin seldom spotted j anal fin longer than high, with 13 or more 



developed rays 2 



^---'''^^7. ^"T'^^i^^''^^-^''^ / Pacific Salmon 



^^^[^^^^^^^^^^--^^"^"^ Genus Oncorhynchus 



Dorsal fin usually with many black spots in young and adults j anal 

 fin higher than long with 1 2 or fewer developed rays 4 



^ — "^^"^^---.^-o ^--^ Atlantic Salmon and Trout 



^^.n^ L, ^ ( Genera SalmOy Cristivomer 



cC and Salvelinus 



2. Without black spots j back light blue shading to silvery white below 



and on the belly j gill rakers long 30 to 40 in number 



Kokanee 

 Oncorhynchus nerka (Walbaum) 



p. 18 



With black spots 3 



3. Black spots large j dorsal fin rays 11 j branchiostegals 15 to 19, anal 



rays 19 to 29 j caudal peduncle more slender 



King Salmon 

 Oncorhynchus tshaivytscha (Walbaum) 



p. 17 



Black spots smaller; dorsal fin rays IO3 branchiostegals 13 to 14; anal 

 rays 1 3 to 15; caudal peduncle stout 



Silver Salmon 



Oncorhynchus kisutch (Walbaum) 



p. 17 



14 



