The day that we saw the school of bullhead fry that I posted that photo of there were several large GSF (9 to 11 inch) hearding them around and picking them off one by one until they had their fill. They didn't seem to have any problems with the barbs. We didn't personally observe any LMB feeding on them but if the GSF did I'm sure the LMB would have.

JHAP
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"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)