Very interesting post...I learned this past weekend that I have sorely underestimated the importance of crayfish in my specific ecology.
Caught 8 'eating size' LMB out of the little pond. I checked the stomach contents of the 4 largest. The contents consisted of:
1 small LMB
literally dozens of crayfishes - whole and in parts
obviously as of right now anyway the crayfish are a major food source for my small pond.
I believe I'll be switching colors on some of my lure selections.