338 SEVENTH REPORT OF THE FOREST, FISH AND GAME COMMISSION. 



The Loch Leven Trout has been recorded of the weight of i8 pounds, but the 

 average weight at 6 years of age is about 7 pounds, though some individuals of that 

 age may reach 10 pounds. The natural food of this species includes fresh-water 

 mollusks (snails, Biiccinnin, etc.), crustaceans, worms and smaii fish. In captivity it 

 is reared on liver, horse flesh, chopped clams and various other meats. 



As a food fish the Loch Leven is highly esteemed on account of the red color 

 and the delicate flavor of its flesh when obtained from suitable waters ; in some 

 localities the flesh often becomes white from lack of food or improper food. 



The spawning season may begin late in September or early in October and 

 continue till December. Li Michigan it corresponds with that of the Brook Trout. 

 The egg varies from about one-fifth to one-fourth of an inch in diameter. A Trout 

 weighing 2 pounds contained 1,944 eggs, the weight of which was one-half pound. 



The Loch Leven will take the artificial fly as readily as the Brown Trout and 

 the Brook Trout. Its great size and strength add to its attractions for the angler. 



RAINnOW TROUT — ADULT MALE. 



65. Rainbow Trout [Salnio irideus Gibbons). (Introduced.) 



Sahno irideus Gibuons, Froc. Cal. Ac. Nat. Sci., 36, 1855, San Leandro Creek, .Vlanieda 

 County, Cal.; Jordan & Gilbert, Bull. 16, U. S. Nat. Mus., 312, in part, 18S3 ; 

 Bean, Bull. U. S. F. C, XII, 36, pi. V, figs. 2 & 3, 1894 ; Fishes Penna., 77, color 

 pi. V, 1893 ; Ann. Rept. N. Y. Comm. Fish, etc., I; Jordan & Evermann, Bull. 47, 

 U. S. Nat. Mus., pi. LXXXI, fig. 216, 1900. 



Sa/mo irideus Shasta Jordan & Evermann, Bull, 47, U. S. Nat. ISIus., 502, 1896. 



Body short and deep, its greatest depth equaling two-sevenths of the total length 

 without caudal. The least depth of caudal peduncle equals one-half the length of 

 head. The head is short and deep ; its length is contained about four and two- 

 thirds times in the total length without the caudal. The snout is short, not much 

 longer than the eye, about one-fourth the length of head. Diameter of the eye 

 contained four and two-thirds times in length of head : maxilla not quite reaching 



