Key points are not available for this paper at this time.
Harold M. Tyus, Neil J. Nikirk, Abundance, Growth, and Diet of Channel Catfish, Ictalurus punctatus, in the Green and Yampa Rivers, Colorado and Utah, The Southwestern Naturalist, Vol. 35, No. 2 (Jun., 1990), pp. 188-198
Tyus et al. (Fri,) studied this question.