82 



REPORT OF STATE BOARD OF FISH COM MISSIONERS. 



Bluebaek salmon, and not a trout. The Steelhead is sometimes called 

 Salmon trout, and llii.s name is not inappropriate. The Salmon trout 

 of England is, however, merely a sea-run example of the European 

 brook trout, or brown trout, Salmo eriox, a species which is also called 

 in the books Salmo fario and Salmo tnitta. 



* 



YOUNG STEELHEAD TROUT. 



From the other trout, the Steelhead is best known by its short head, 

 the length of the head along the side being contained four and one half 

 to five times in the length of the body from the tip of the snout to the 

 base of the caudal fin. The scales in the Steelhead are rather small, 

 averaging about one hundred and fifty in a lengthwise series from head 

 to tail. The dorsal fin is low, and it has usuallv but three or four rows 



J 



ADULT STEELHEAD TROUT— Salmo rirularis Ayres. 



of dark spots. There are no teeth on the base of the tongue, the usual 

 series lying around the outer edge. 



The Steelhead trout does not go very far from the sea, except in 

 the large rivers, its habits in this regard being more like the salmon 

 than those usual among trout. The old fishes do not, however, die 

 ai'ter spawning. When in salt water, the SteeDiead is very silvery, 

 but in fresh water the spots appear, and in the small streams it is 



