mountain sucker

Capt. Lewis, March 12, 1806 -- ..a species similar to one of those noticed on the Missouri within the mountains, called in the Eastern sates, bottle-nose.

Capt. Clark, July 16, 1806-- one of the men brought me a fish of a species I am unacquainted [with] ;  it was 8 inches long formed like a trout.  it's mouth was placed like that of the Sturgeon   a red streak passed down each side from the gill to the tail.