24 U. S. BUREAU OF FISHERIES. 



as our eastern brook trout. It is by some regarded highly as a game 

 fish, taking either bait or artificial fly. The best fly fishing is usually 

 toward night. As a game and food fish it is in its prime from May to 

 September. Its flesh is very agreeable in flavor. Spawning begins 

 in October. 



Tlie brown trout has a rather extensive distribution in the park, 

 although only a single plant of 9,300 fish was made in Noz Perce 

 Creek in 1890. The fish now inhabits the Madison, Gibbon, and Fire- 

 hole Rivers. In the last named it is found from its junction with the 

 Gibbon to Keppler Cascades and is particularly numerous in Nez 

 Perce Creek, Little Firehole River below Mystic Falls, and Iron 

 Creek. In the main streams fish have been taken weighing up to 8 

 pounds. In the park, as elsewhere, the brown trout has the reputa- 



FiG. 6.— European brown trout; Von Bclir trout. 



tion of being antagonistic to other trouts and of increasing in size 

 and abundance at the expense of the others. 



Mary Trowbridge Townsend, in her interesting article on trout 

 fishing in the park (1. c), mentioned a brown trout from the Firehole 

 River: 



A good 4-pounder. and unusual marking, large yellow spots encircled by black, 

 "withgreat brilliancy of iridescent color. * * * J took afterwards several of the same 

 variety, known in the park as the Von Behr trout, and which I have since found to 

 be the same Sahnofario, the veritable trout of Izaak Walton. 



7. Lake Trout; Mackinaw Trout (Cristivomer namaycush). 



The lake trout, otherw^ise known as laker, lunge, togue, Mackinaw 

 trout, etc., is of wide northern distribution. In British America it 

 ranges from the Atlantic to the Pacific coasts and northward to the 

 Arctic Ocean. In the United States it is found in many of the larger 

 and deeper lakes in New England and New York, in the Great Lakes 

 Basin, and in a few localities in the Western States, as Montana and 

 Idaho. It occurs also in Alaska. It has also been spread by fish- 

 cultural operations into waters where it did not previously exist. 



The lake trout owes its presence in the park to two plants of 30,000 

 and 12,000 fingerlings in Shoshone Lake and Lewis Lake, respectively, 

 in 1890. The fish is now common in those waters, especially around 

 the shores, and was formerly taken in large quantities to supply the 

 park hotels. It is found also in the "canal" connecting the two 

 lar^c lakes. In some waters it attains a verv large size. Examples 

 weighing over 100 poimds have been reported from the Great Lakes, 



