28 U. S. BUREAU OF FISHERIES. 
10. Bros (Cottus punctulatus). 
This little sculpin belongs in the Missouri Basin and abounds in 
some of the waters of the park. It has been reported to swarm in the 
erassy-bottom portions of the Madison and Gibbon Rivers and in 
Canyon Creek and to be numerous in the Gibbon above the falls. It 
Fic. 10.—Blob. 
is known also from the Firehole below the falls. The presence of this 
fish in the Gibbon River above the falls is a freak in distribution that 
has not been explained. The blob is probably justly accused of 
being destructive to the eggs of other fishes and appears to be of little 
use, unless possibly as bait for large trout. It can be taken with a 
small baited hook. It attains a length of 5 inches. 
11. LONGNOsE SucKER (Catostomus catostomus). 
This species is of wide natural distribution in northern waters, its 
geographical range being from the Pacific to the Atlantic coasts and 
into the Arctic regions. It attains a length of 18 inches and a weight 
of several pounds. Its spawning time is spring and early summer 
Fic. 11.—Longnose sucker. 
when the males have their anal fin profusely covered with tubercles 
and the side of the body with a broad red stripe more or less diffuse 
on the edges. It is not sought as a game fish, but sometimes takes a 
baited hook and fights fairly well. When taken from cool water 
and cooked at once it is a good-flavored pan fish, although somewhat 
bony. It is abundant in Yellowstone and Gardiner Rivers below 
the Osprey, Undine, and Rustic Falls. 
