The rock-rolling whitefish is a little-known species of fish, whose existence has only ever been reported (as far as I know) in the June 1932 issue of Montana Wild Life magazine
. Discovery of this creature was credited to Jack Boehme, a manufacturer of fish tackle.
Here's the information that Montana Wild Life
offered about this unusual creature:
It seems that this rock-rolling Montana whitefish extolled by Jack Boehme, and organized by a taxidermist of no mean versatility, is endowed with horns. Boehme declares, to all visiting dudes, that the specimen on display was caught in Boulder creek. Of course Montana has some dozen of these Boulder creeks, hence the exact location of the catch is still a mystery. He further explains that the specimen, pictured in this edition of MONTANA WILD LIFE, obtains its food by rolling over stones by using the horns that grow from the stomach. He enlightens the seeker for knowledge with these remarks:
"At night this strange Montana fish manages to sleep by driving its horns into a log in the stream and remains there until the first ray of sunlight strikes it in the morning. The horns are caused to relax by the sunlight and thus it is freed from the log. It is one of the most difficult of Montana fish to land because of the horns. When hooked, it usually dives into a log jam and it is almost impossible to extricate it. The horns on its back and belly are firmly affixed to logs when it is hooked and the leader is usually broken. This fish was landed by removing the log to which the fish had fastened itself."
That's Jack Boehme's story and he's sticking to it just like the rock-rolling whitefish sticks to the log. Believe it or not.