Past observations and ongoing population surveys indicate daily and yearly vertical movement of the Devil's Hole pupfish, Cyprinodon diabolis Wales, within the upper 27 m of the water column in Devil's Hole, Nevada. This movement involves occupying and leaving a 5 by 3.5 m rock shelf during daily and yearly periods of maximum light intensity.
Baugh, Thomas M. and Deacon, James E.
"Daily and yearly movement of the Devil's Hole pupfish Cyprinodon diabolis Wales in Devil's Hole, Nevada,"
Great Basin Naturalist: Vol. 43
, Article 9.
Available at: http://scholarsarchive.byu.edu/gbn/vol43/iss4/9