48 FISHES OF THE CONNECTICUT LAKES. 



17. Brown Trout. Sahiio fario Linnaeus. 



Head 3.8 in length ; eye 5 in liead ; snout 3.7 ; distance from tip of snout to end 

 of maxillary 1.8; distance from tip of snout to end of maxillary bone 2.35; 

 gillrakers 5+11 ; branchiostegals 10 ; dorsal 10 ; anal 9 ; longest dorsal ray 1.5 

 in head; longest anal ray 1.6; longest pectoral ray 1.44; scales 140. 



Body comparatively short and stout ; head moderate ; eye small ; mouth large ; 

 maxillary reaching beyond eye; caudal peduncle deep, about 2.5 in head; origin 

 of dorsal fin slightly nearer tip of snout than base of caudal, its outer edge 

 straight; caudal fin nearly truncate, slightly emargiuate in small examples; 

 anal similar to dorsal, its posterior base directly under posterior base of adipose 

 fin; origin of ventrals under last third of dorsal, tips not reaching vent; pectoral 

 moderate, falcate. 



General color in life, top and side of head and back as far down as lateral 

 line light olive with metallic lustre; side of back and side, as far as lateral 

 line, with black and dark brown spots; top of back without spots; below lateral 

 line' to level of ventral fins light olive and light golden yellow; belly white; 

 large black spot on preopercle and several smaller black spots on opercle; along 

 sides, immediately above and below lateral line, light orange spots, ocellated 



Fig. 4. — Brown trout. 



with very pale blue ; dorsal fin with numerous black spots, fin grayish olive, 

 tip of first 3 or 4 rays lighter gray ; other fins yellowish olive ; first ray of anal 

 white, margined posteriorly with dusky streak ; no spots on caudal ; adipose fin 

 plain; tips of jaws dusky; throat and under part of lower jaw white; parr 

 marks evident at times, about 11 in number ; very faint large dusky spots below 

 posteriorly. 



Description from male specimen 9 inches in total length. 



Distinguished from the common trout by having spots on the back instead of 

 wavy markings or rivulations, and the vomer with teeth on the shaft, not in a 

 group at the head as in the common trout. Distinguished from salmon by the 

 presence of white margins to ventral and anal fins. 



The '' brown trout," " German trout/' " German brown trout," or 

 " von Behr trout " is the common brook trout of Europe. In Great 

 Britain it is the " brown trout " or " yellow trout." It was intro- 

 duced into this country from Germany in 1883, according to Bean «, 

 through the instrumentality of Herr von Behr, president of the 

 Deutscher Fischerei Verein: 



« Bean, T. H. Fishes of New York. Bulletin 60, New York State iluseum, 

 1903, p. 256. 



