BIOLOGICAL 127 



DESCRIPTION 



I consider fario a handsome fish, especially when 

 taken from deep, shaded places. His velvety, dark 

 skin then offers a pleasing contrast to his rich, red 

 spots. In form the brown trout is slimmer than fon- 

 tinalis and his tail is squarer. In color his back is 

 dark, spotted with black; the dorsal fin has both black 

 and red spots, the adipose fin being decorated with 

 three bright red spots, while the lower fins are orange, 

 The sides are yellow and the belly dull white. 



Since the rainbow and brown trout are so extensively 

 planted it might be well to point out the distinguishing 

 features of each fish so that the young angler may 

 know what he has caught: 



Brook Trout vermiculations or worm-like mark- 

 ings on back; scales almost invisible; mouth large, jaw 

 extending back of eye; single patch of teeth on vomer 

 or roof bone of mouth. 



Brown Trout no vermiculations on back; scales 

 visible; mouth slightly smaller than brook trout; one 

 or two rows of teeth on front and rear parts of vomer ; 

 more yellow in coloration; spots red but larger than 

 those of fontinalis and seldom found below median 

 line ; tail square. 



Rainbow Trout no vermiculations ; mouth very 

 small; scales large; red patch or band on sides; same 

 tooth formation on vomer as in brown trout; spots 

 black and irregular, distributed over body and fins. 



