FISHES, LAHONTAN SYSTEM OF NEVADA AND NORTHEASTERN CALIFORNIA. 85 



Ameiarus nebulosus (Le Sueur). Catfish. 



Catfish of this and possibly other species thrive in the broad, quiet waters of the lower valleys. 

 Examples of moderate size may be caught with hook and line in the Truckee, Humboldt, Carson, and 

 Susan Rivers. 



Cyprinus carpio Linnseus. Carp. 



Carp are widely distributed, and in suitable places they reach a large size. At present they are of 

 no economic importance and are generally regarded as a nmsance. 



Oncorhynchus kisutch (Walbaum). Silver salmon. 



Mr Mills, of the Nevada Fish Commission, placed a large number of small silver salmon in the lower 

 Truckee River June 27, 1913. 



Oncorhynchus tschawytscha (Walbaum). King salmon. 



An example of this species loK inches long was caught by an angler while trolling in Lake Tallac 

 June 20, 191 1. 



Salmo irideus Shasta (Jordan). McCloud River trout. 



This species, known locally as rainbow trout or Shasta trout, seems to be increasing in numbers. 

 Other forms of the rainbow trout may have been introduced at various times, but records are not avail- 

 able. It thrives in the rivers and lakes, where the native cutthroat appears to give way before it. Large 

 specimens were seen in the lower Truckee River and in the Humboldt and Carson Rivers. Examples 

 were collected in Honey Lake Basin and also in Walker River. Specimens found in the desert streams 

 are very light in color. One from Carson River at Genoa was pale olive on the upper surface down to 

 where a pink lateral stripe occurred on the side, which extended from the upper edge of the opercle to 

 base of caudal. Below the stripe the body was silvery, suffused with pale pink. Pectorals, ventrals, 

 and anal bright salmon pink. Dorsal and adipose fins like the back. Some individuals were lighter 

 and more silvery. Black spots were numerous above the lateral line in all the above. An example 

 measuring 18 inches was caught in the Truckee River near the Indian Agency. Above the lateral line 

 the body was profusely spotted, and the general color was darker than that just described. The scales 

 numbered about 140. 



In the Nevada hatchery this and the native species have been crossed, and the hybrids have been 

 tiu'ned into various streams, but the writer is not aware that any further attention has been paid to the 

 experiment. 



Salmo fario Linnaeus. European trout; German trout; Loch Leven trout; brown trout. 



Specimens of European trout were seen at Tallac. They were caught in Lake Tahoe, Fallen Leaf, 

 and other lakes, and in the Truckee River. 



Cristivomer namaycush (Walbaum). Mackinaw trout. 



Specimens of this long-headed, ravenous-looking trout were frequently seen at Tallac. It is found 

 in Fallen Leaf, Cascade, and other smaller lakes as well as Lake Tahoe, and it is generally regarded as 

 inferior to both the rainbow and the cutthroat trout. It is difficult to say anything in defense of the 

 introduction of the species. Mr. Mills reports one weighing 26 pounds. 



SalveUnus fontinaUa (Mitchill). Brook trout. 



The eastern brook trout has been introduced, and found a place in the small brush-lined tributaries 

 of the larger streams and lakes where examples of considerable size are frequently caught. Judging 

 from descriptions in eastern publications, it appears to retain its brilliant color and characteristic habits 

 here. 



