Throughout the northwest the brown trout, _Salmo fario_, is generally known as the "von Behr" trout, from the name of the German fish-culturist who sent the first shipment of their eggs to this country. This fish may be distinguished at sight by the coarse scales which give his body a dark grayish appearance, slightly resembling a mullet, and by the large dull red spots along the lateral line. There are also three beautiful red spots on the adipose fin.
The Loch Leven trout, _Salmo levenensis_, comes from a lake of that name in southern Scotland. He is a canny, uncertain fellow, and nothing like as hardy as we might expect from his origin. In the Park waters he has not justified the fame for gameness which he brings from abroad, but there are occasions, particularly in the vicinity of the Lone Star geyser, when he comes on with a very pretty rush. In general appearance he somewhat resembles the von Behr trout, but is a more graceful and finely organized fish than the latter. He is the only trout of this locality that has no red on his body, and its absence is sufficient to distinguish him from all others.
[Illustration: _Distant View of Mt. Holmes_]
No one can possibly mistake the rainbow trout, _Salmo irideus_, for any other species. The large, brilliant spots with which his silvery-bluish body is covered, and that filmy iridescence so admired by every one, will identify him anywhere. There is, however, a marked difference in the brilliance of this iridescence between fish of different ages as well as between stream-raised and hatchery-bred specimens, and even among fish from the upper and lower courses of the same stream.
The question as to which is the more beautiful, the rainbow or the brook trout, has often been debated with much feeling by their respective champions, and will doubtless remain undecided so long as both may be taken from clear-flowing brooks, where sky and landscape blend with the soul of man to make him as supremely happy as it is ever the lot of mortals to become. For it is the joy within and around you that supplies a mingled pleasure far deeper than that afforded by the mere beauty of the fish. You will remember that "Doctor Boteler" said of the strawberry, "Doubtless God could have made a better berry, but doubtless God never did." So, I have said at different times of _both_ brook and rainbow trout, "Doubtless God could have made a more beautiful fish than this, but doubtless God never did."